1) The document discusses motion in two dimensions, including position, velocity, and acceleration vectors. It provides examples of solving two-dimensional motion problems by separating them into independent horizontal and vertical components.
2) Key concepts covered include defining a coordinate system, identifying known quantities like initial position and velocity, choosing the appropriate kinematic equations, and solving for the motion in each dimension separately while keeping the time variable the same.
3) Problem-solving techniques are outlined, such as sketching the problem, listing initial conditions, and picking an acceleration axis when acceleration is constant. Solving projectile motion examples separates the constant horizontal and vertically accelerating components.
Chapter 3 discusses vectors and projectile motion. Vectors have both magnitude and direction, while scalars only have magnitude. Vector addition can be done graphically by placing the tail of one vector at the head of another, or by resolving vectors into perpendicular components and adding them. Projectile motion involves constant horizontal velocity and vertically accelerated motion due to gravity, allowing the horizontal and vertical motions to be analyzed separately. Key equations relate the initial velocity, angle, range, maximum height, time of flight, and landing position.
This problem involves analyzing the motion of a ball thrown vertically upwards in an elevator shaft, and an open-platform elevator moving upwards at a constant velocity.
The key steps are:
1) Use kinematic equations to find the velocity and position of the ball as a function of time, assuming constant downward acceleration due to gravity.
2) Determine the velocity and position of the elevator as a constant upward velocity.
3) Express the relative motion of the ball with respect to the elevator to determine when they meet.
By setting the position of the ball equal to the position of the elevator and solving for time, we can determine when the ball and elevator meet at 26.4 seconds after the ball is thrown
Text Book: An Introduction to Mechanics by Kleppner and Kolenkow
Chapter 1: Vectors and Kinematics
-Explain the concept of vectors.
-Explain the concepts of position, velocity and acceleration for different kinds of motion.
References:
Halliday, Resnick and Walker
Berkley Physics Volume-1
- The document discusses kinematic concepts such as position, displacement, velocity, and acceleration for particles moving along a straight path. It defines these concepts using equations of motion.
- Rectilinear motion is analyzed by creating graphs of position vs. time, velocity vs. time, and acceleration vs. time. The slopes of these graphs are used to define velocity, acceleration, and how they relate to each other.
- Integrals of the kinematic equations are used to determine relationships between position, velocity, acceleration, and time.
Chapter 2 introduces the concepts of kinematics including reference frames, displacement, velocity, acceleration, and motion with constant acceleration. Equations are derived that relate displacement, velocity, acceleration, and time for objects undergoing constant acceleration. Near the Earth's surface, the acceleration due to gravity is approximately 9.80 m/s2, so these equations can be applied to analyze falling or projected objects using this value of acceleration.
This document discusses kinematics of particles using polar components. It defines the position vector of a particle as the vector from the origin to the particle's position. For curvilinear motion, the instantaneous velocity vector is defined as the limit of the displacement vector divided by the time interval as the interval approaches zero. Similarly, the instantaneous acceleration vector is defined as the limit of the change in velocity vector over the time interval. Polar components (radial and transverse) and tangential and normal components are also introduced to analyze curvilinear motion. Expressions are derived for velocity and acceleration in terms of these component directions. An example problem of a centrifuge is worked out using these concepts.
This lecture covered angular momentum and torque using vectors. Key topics included:
- Defining angular momentum and torque using vectors and cross products
- Calculating the cross product of two vectors to find the perpendicular vector
- Applying the right-hand rule to determine the direction of a cross product
- Deriving relationships for torque as the cross product of a force vector and position vector
- Examples of calculating torque for single and multiple forces applied to an object
chapter2powerpoint-090816163937-phpapp02.pptMichael Intia
Kinematics deals with concepts of motion like displacement, velocity, and acceleration. Dynamics deals with forces that cause motion. Together they form the branch of mechanics. Displacement is defined as the difference between the final and initial positions. Speed is the distance traveled divided by time. Velocity is displacement divided by time. Acceleration is the rate of change of velocity with respect to time. Equations relate the kinematic variables of displacement, velocity, acceleration, time, and initial velocity. Position-time and velocity-time graphs provide a visual representation of motion and can be analyzed to determine properties like speed, direction of motion, and periods of acceleration.
Chapter 3 discusses vectors and projectile motion. Vectors have both magnitude and direction, while scalars only have magnitude. Vector addition can be done graphically by placing the tail of one vector at the head of another, or by resolving vectors into perpendicular components and adding them. Projectile motion involves constant horizontal velocity and vertically accelerated motion due to gravity, allowing the horizontal and vertical motions to be analyzed separately. Key equations relate the initial velocity, angle, range, maximum height, time of flight, and landing position.
This problem involves analyzing the motion of a ball thrown vertically upwards in an elevator shaft, and an open-platform elevator moving upwards at a constant velocity.
The key steps are:
1) Use kinematic equations to find the velocity and position of the ball as a function of time, assuming constant downward acceleration due to gravity.
2) Determine the velocity and position of the elevator as a constant upward velocity.
3) Express the relative motion of the ball with respect to the elevator to determine when they meet.
By setting the position of the ball equal to the position of the elevator and solving for time, we can determine when the ball and elevator meet at 26.4 seconds after the ball is thrown
Text Book: An Introduction to Mechanics by Kleppner and Kolenkow
Chapter 1: Vectors and Kinematics
-Explain the concept of vectors.
-Explain the concepts of position, velocity and acceleration for different kinds of motion.
References:
Halliday, Resnick and Walker
Berkley Physics Volume-1
- The document discusses kinematic concepts such as position, displacement, velocity, and acceleration for particles moving along a straight path. It defines these concepts using equations of motion.
- Rectilinear motion is analyzed by creating graphs of position vs. time, velocity vs. time, and acceleration vs. time. The slopes of these graphs are used to define velocity, acceleration, and how they relate to each other.
- Integrals of the kinematic equations are used to determine relationships between position, velocity, acceleration, and time.
Chapter 2 introduces the concepts of kinematics including reference frames, displacement, velocity, acceleration, and motion with constant acceleration. Equations are derived that relate displacement, velocity, acceleration, and time for objects undergoing constant acceleration. Near the Earth's surface, the acceleration due to gravity is approximately 9.80 m/s2, so these equations can be applied to analyze falling or projected objects using this value of acceleration.
This document discusses kinematics of particles using polar components. It defines the position vector of a particle as the vector from the origin to the particle's position. For curvilinear motion, the instantaneous velocity vector is defined as the limit of the displacement vector divided by the time interval as the interval approaches zero. Similarly, the instantaneous acceleration vector is defined as the limit of the change in velocity vector over the time interval. Polar components (radial and transverse) and tangential and normal components are also introduced to analyze curvilinear motion. Expressions are derived for velocity and acceleration in terms of these component directions. An example problem of a centrifuge is worked out using these concepts.
This lecture covered angular momentum and torque using vectors. Key topics included:
- Defining angular momentum and torque using vectors and cross products
- Calculating the cross product of two vectors to find the perpendicular vector
- Applying the right-hand rule to determine the direction of a cross product
- Deriving relationships for torque as the cross product of a force vector and position vector
- Examples of calculating torque for single and multiple forces applied to an object
chapter2powerpoint-090816163937-phpapp02.pptMichael Intia
Kinematics deals with concepts of motion like displacement, velocity, and acceleration. Dynamics deals with forces that cause motion. Together they form the branch of mechanics. Displacement is defined as the difference between the final and initial positions. Speed is the distance traveled divided by time. Velocity is displacement divided by time. Acceleration is the rate of change of velocity with respect to time. Equations relate the kinematic variables of displacement, velocity, acceleration, time, and initial velocity. Position-time and velocity-time graphs provide a visual representation of motion and can be analyzed to determine properties like speed, direction of motion, and periods of acceleration.
1) The document discusses motion in one dimension, including speed, velocity, acceleration, and formulas for constant acceleration.
2) It defines key terms like speed, velocity, average velocity, instantaneous velocity, acceleration, and average versus instantaneous acceleration.
3) Examples are provided of situations with constant acceleration, including gravitational acceleration near Earth's surface of 9.8 m/s2.
This document provides an overview of kinematics concepts including displacement, speed, velocity, acceleration, and equations of motion. Key points covered include:
- Kinematics deals with describing motion without considering causes of motion like forces.
- Displacement, speed, velocity, and acceleration are defined. Equations of motion that relate these variables for constant acceleration are presented.
- Position-time and velocity-time graphs are introduced as ways to represent motion. The slope and area under graphs relate to velocity and displacement.
- Free fall near the Earth's surface provides a specific example where acceleration due to gravity is constant.
- Graphical analysis techniques are described for determining acceleration from velocity-time graphs.
Vectors have both magnitude and direction, while scalars only have magnitude. Common vector quantities include displacement, velocity, acceleration, force, and electric and magnetic fields. Vector notation allows physical laws to be written compactly. Vectors can be added, subtracted, and multiplied by scalars. The dot product yields a scalar and the cross product yields a vector perpendicular to the two original vectors. Uniform circular motion results in constant speed but centripetal acceleration directed radially inward.
This document discusses concepts in rectilinear kinematics including position, displacement, velocity, acceleration, and their relationships. It defines these terms and concepts for motion along a straight line. Equations of motion are presented that relate these quantities including expressions for velocity and position as functions of time given constant acceleration. Examples are provided to demonstrate calculating these values for objects in motion. Free fall under constant acceleration due to gravity is also analyzed as a specific example.
In this relative motion and relative speed concept is demonstrated with help of examples, graphically and mathematically. The concepts of Einstein and Galileo
1. The document discusses motion in a straight line, including key concepts like displacement, average and instantaneous velocity, acceleration, position-time and velocity-time graphs.
2. It provides equations for uniformly accelerated motion relating position, velocity, time, and acceleration.
3. Examples of relative motion and relative velocity between two objects moving with different average velocities along the same axis are given.
This document provides instructional materials on analyzing motion using vectors. It begins with definitions of motion and discusses rectilinear, parabolic, and circular motion. Rectilinear motion is analyzed using position, velocity, and acceleration vectors. Parabolic motion results from horizontal rectilinear motion combined with vertically accelerated motion. Circular motion is described using angular position, velocity, and acceleration. Examples are provided to demonstrate analyzing different types of motions using vectors.
This chapter introduces concepts of kinematics including displacement, distance, speed, velocity, average velocity, instantaneous velocity, acceleration, and uniformly accelerated motion. Key equations relating position, velocity, and acceleration in one dimension are derived. Examples are provided to demonstrate applying these equations to problems involving uniform and accelerated linear motion as well as free fall. A lab experiment is described to measure the acceleration due to gravity using a Behr free fall apparatus.
Motion in a Straight Line Class 11 Physics
As students embark on the journey into the fascinating realm of physics in Class 11, one of the fundamental topics that captivates their attention is "Motion in a Straight Line." This foundational concept forms the bedrock of kinematics, the branch of physics concerned with the description of motion. In this chapter, students explore the dynamics of objects moving along a linear path, unraveling the principles that govern their displacement, velocity, and acceleration. From understanding the basic distinctions between scalar and vector quantities to delving into the equations that quantify motion, Class 11 students embark on a captivating exploration of the fundamental laws that underpin the linear journey of objects in motion. Motion in a straight line not only serves as a gateway to more intricate concepts in physics but also provides a lens through which students perceive and analyze the dynamics of the world around them.
For more information, visit. www.vavaclasses.com
This document provides information about a dynamics course taught by Professor Nikolai V. Priezjev. The course will cover kinematics and dynamics using the textbook "Vector Mechanics for Engineers: Dynamics" by Beer, Johnston, Mazurek and Cornwell. Kinematics deals with the geometric aspects of motion without forces or moments. The course objectives are to derive relations between position, velocity and acceleration for various motion types using concepts like the s-t graph and rectangular components.
1. Angular momentum is a fundamental physical quantity that describes the rotational motion of objects. It is defined as the cross product of an object's position vector and its linear momentum.
2. For a system of particles, the total angular momentum is the vector sum of the individual angular momenta. The angular momentum of a system remains constant if the net external torque on the system is zero.
3. Conservation of angular momentum is a fundamental principle of physics that applies to both isolated microscopic and macroscopic systems. It is a manifestation of the symmetry of space.
The document discusses particle kinematics and concepts such as displacement, velocity, acceleration, and their relationships for rectilinear and curvilinear motion. Key concepts covered include definitions of displacement, average and instantaneous velocity, acceleration, graphical representations of position, velocity, and acceleration over time, and analytical methods for solving kinematic equations involving constant or variable acceleration. Several sample problems are provided to illustrate applying these kinematic concepts and relationships to solve for variables like time, velocity, acceleration, and displacement given relevant conditions.
This document provides an overview of graphing motion in one dimension. It discusses position versus time graphs, velocity versus time graphs, and acceleration versus time graphs. Key points include:
- The slope of a position-time graph represents velocity, and the slope of a velocity-time graph represents acceleration.
- Straight lines on position-time graphs indicate uniform motion with constant velocity.
- The area under a velocity-time graph represents displacement.
- Kinematic equations allow calculations of variables like position, velocity, and acceleration given information about an object's motion under constant acceleration.
The document discusses kinematics of particles, including rectilinear and curvilinear motion. It defines key concepts like displacement, velocity, and acceleration. It presents equations for calculating these values for rectilinear motion under different conditions of acceleration, such as constant acceleration, acceleration as a function of time, velocity, or displacement. Graphical interpretations are also described. An example problem is worked through to demonstrate finding velocity, acceleration, and displacement at different times for a particle moving in a straight line.
The document summarizes plane curvilinear motion and projectile motion. It defines key concepts like position vector, velocity, acceleration, and rectangular coordinate analysis. It provides equations to describe velocity and acceleration in x and y directions. Examples are given to demonstrate calculating displacement, velocity, acceleration from given motion equations. The last two examples solve for minimum initial velocity and angles to just clear a fence or pass through a basketball hoop.
Curvilinear motion occurs when a particle moves along a curved path.
Since this path is often described in three dimensions, vector analysis will
be used to formulate the particle's position, velocity, and acceleration
This document contains conceptual problems and their solutions related to motion in two and three dimensions. It discusses concepts such as displacement vs distance traveled, examples of motion with different acceleration and velocity vector directions, and solving problems involving velocity, acceleration, and displacement vectors. Sample problems include analyzing the motion of a dart thrown upward or falling downward, determining displacement vectors, and solving constant acceleration problems for objects moving in two dimensions.
• For a full set of 530+ questions. Go to
https://skillcertpro.com/product/servicenow-cis-itsm-exam-questions/
• SkillCertPro offers detailed explanations to each question which helps to understand the concepts better.
• It is recommended to score above 85% in SkillCertPro exams before attempting a real exam.
• SkillCertPro updates exam questions every 2 weeks.
• You will get life time access and life time free updates
• SkillCertPro assures 100% pass guarantee in first attempt.
This presentation by Professor Alex Robson, Deputy Chair of Australia’s Productivity Commission, was made during the discussion “Competition and Regulation in Professions and Occupations” held at the 77th meeting of the OECD Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found at oe.cd/crps.
This presentation was uploaded with the author’s consent.
1) The document discusses motion in one dimension, including speed, velocity, acceleration, and formulas for constant acceleration.
2) It defines key terms like speed, velocity, average velocity, instantaneous velocity, acceleration, and average versus instantaneous acceleration.
3) Examples are provided of situations with constant acceleration, including gravitational acceleration near Earth's surface of 9.8 m/s2.
This document provides an overview of kinematics concepts including displacement, speed, velocity, acceleration, and equations of motion. Key points covered include:
- Kinematics deals with describing motion without considering causes of motion like forces.
- Displacement, speed, velocity, and acceleration are defined. Equations of motion that relate these variables for constant acceleration are presented.
- Position-time and velocity-time graphs are introduced as ways to represent motion. The slope and area under graphs relate to velocity and displacement.
- Free fall near the Earth's surface provides a specific example where acceleration due to gravity is constant.
- Graphical analysis techniques are described for determining acceleration from velocity-time graphs.
Vectors have both magnitude and direction, while scalars only have magnitude. Common vector quantities include displacement, velocity, acceleration, force, and electric and magnetic fields. Vector notation allows physical laws to be written compactly. Vectors can be added, subtracted, and multiplied by scalars. The dot product yields a scalar and the cross product yields a vector perpendicular to the two original vectors. Uniform circular motion results in constant speed but centripetal acceleration directed radially inward.
This document discusses concepts in rectilinear kinematics including position, displacement, velocity, acceleration, and their relationships. It defines these terms and concepts for motion along a straight line. Equations of motion are presented that relate these quantities including expressions for velocity and position as functions of time given constant acceleration. Examples are provided to demonstrate calculating these values for objects in motion. Free fall under constant acceleration due to gravity is also analyzed as a specific example.
In this relative motion and relative speed concept is demonstrated with help of examples, graphically and mathematically. The concepts of Einstein and Galileo
1. The document discusses motion in a straight line, including key concepts like displacement, average and instantaneous velocity, acceleration, position-time and velocity-time graphs.
2. It provides equations for uniformly accelerated motion relating position, velocity, time, and acceleration.
3. Examples of relative motion and relative velocity between two objects moving with different average velocities along the same axis are given.
This document provides instructional materials on analyzing motion using vectors. It begins with definitions of motion and discusses rectilinear, parabolic, and circular motion. Rectilinear motion is analyzed using position, velocity, and acceleration vectors. Parabolic motion results from horizontal rectilinear motion combined with vertically accelerated motion. Circular motion is described using angular position, velocity, and acceleration. Examples are provided to demonstrate analyzing different types of motions using vectors.
This chapter introduces concepts of kinematics including displacement, distance, speed, velocity, average velocity, instantaneous velocity, acceleration, and uniformly accelerated motion. Key equations relating position, velocity, and acceleration in one dimension are derived. Examples are provided to demonstrate applying these equations to problems involving uniform and accelerated linear motion as well as free fall. A lab experiment is described to measure the acceleration due to gravity using a Behr free fall apparatus.
Motion in a Straight Line Class 11 Physics
As students embark on the journey into the fascinating realm of physics in Class 11, one of the fundamental topics that captivates their attention is "Motion in a Straight Line." This foundational concept forms the bedrock of kinematics, the branch of physics concerned with the description of motion. In this chapter, students explore the dynamics of objects moving along a linear path, unraveling the principles that govern their displacement, velocity, and acceleration. From understanding the basic distinctions between scalar and vector quantities to delving into the equations that quantify motion, Class 11 students embark on a captivating exploration of the fundamental laws that underpin the linear journey of objects in motion. Motion in a straight line not only serves as a gateway to more intricate concepts in physics but also provides a lens through which students perceive and analyze the dynamics of the world around them.
For more information, visit. www.vavaclasses.com
This document provides information about a dynamics course taught by Professor Nikolai V. Priezjev. The course will cover kinematics and dynamics using the textbook "Vector Mechanics for Engineers: Dynamics" by Beer, Johnston, Mazurek and Cornwell. Kinematics deals with the geometric aspects of motion without forces or moments. The course objectives are to derive relations between position, velocity and acceleration for various motion types using concepts like the s-t graph and rectangular components.
1. Angular momentum is a fundamental physical quantity that describes the rotational motion of objects. It is defined as the cross product of an object's position vector and its linear momentum.
2. For a system of particles, the total angular momentum is the vector sum of the individual angular momenta. The angular momentum of a system remains constant if the net external torque on the system is zero.
3. Conservation of angular momentum is a fundamental principle of physics that applies to both isolated microscopic and macroscopic systems. It is a manifestation of the symmetry of space.
The document discusses particle kinematics and concepts such as displacement, velocity, acceleration, and their relationships for rectilinear and curvilinear motion. Key concepts covered include definitions of displacement, average and instantaneous velocity, acceleration, graphical representations of position, velocity, and acceleration over time, and analytical methods for solving kinematic equations involving constant or variable acceleration. Several sample problems are provided to illustrate applying these kinematic concepts and relationships to solve for variables like time, velocity, acceleration, and displacement given relevant conditions.
This document provides an overview of graphing motion in one dimension. It discusses position versus time graphs, velocity versus time graphs, and acceleration versus time graphs. Key points include:
- The slope of a position-time graph represents velocity, and the slope of a velocity-time graph represents acceleration.
- Straight lines on position-time graphs indicate uniform motion with constant velocity.
- The area under a velocity-time graph represents displacement.
- Kinematic equations allow calculations of variables like position, velocity, and acceleration given information about an object's motion under constant acceleration.
The document discusses kinematics of particles, including rectilinear and curvilinear motion. It defines key concepts like displacement, velocity, and acceleration. It presents equations for calculating these values for rectilinear motion under different conditions of acceleration, such as constant acceleration, acceleration as a function of time, velocity, or displacement. Graphical interpretations are also described. An example problem is worked through to demonstrate finding velocity, acceleration, and displacement at different times for a particle moving in a straight line.
The document summarizes plane curvilinear motion and projectile motion. It defines key concepts like position vector, velocity, acceleration, and rectangular coordinate analysis. It provides equations to describe velocity and acceleration in x and y directions. Examples are given to demonstrate calculating displacement, velocity, acceleration from given motion equations. The last two examples solve for minimum initial velocity and angles to just clear a fence or pass through a basketball hoop.
Curvilinear motion occurs when a particle moves along a curved path.
Since this path is often described in three dimensions, vector analysis will
be used to formulate the particle's position, velocity, and acceleration
This document contains conceptual problems and their solutions related to motion in two and three dimensions. It discusses concepts such as displacement vs distance traveled, examples of motion with different acceleration and velocity vector directions, and solving problems involving velocity, acceleration, and displacement vectors. Sample problems include analyzing the motion of a dart thrown upward or falling downward, determining displacement vectors, and solving constant acceleration problems for objects moving in two dimensions.
• For a full set of 530+ questions. Go to
https://skillcertpro.com/product/servicenow-cis-itsm-exam-questions/
• SkillCertPro offers detailed explanations to each question which helps to understand the concepts better.
• It is recommended to score above 85% in SkillCertPro exams before attempting a real exam.
• SkillCertPro updates exam questions every 2 weeks.
• You will get life time access and life time free updates
• SkillCertPro assures 100% pass guarantee in first attempt.
This presentation by Professor Alex Robson, Deputy Chair of Australia’s Productivity Commission, was made during the discussion “Competition and Regulation in Professions and Occupations” held at the 77th meeting of the OECD Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found at oe.cd/crps.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “The Intersection between Competition and Data Privacy” held at the 143rd meeting of the OECD Competition Committee on 13 June 2024. More papers and presentations on the topic can be found at oe.cd/ibcdp.
This presentation was uploaded with the author’s consent.
This presentation by Juraj Čorba, Chair of OECD Working Party on Artificial Intelligence Governance (AIGO), was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
The importance of sustainable and efficient computational practices in artificial intelligence (AI) and deep learning has become increasingly critical. This webinar focuses on the intersection of sustainability and AI, highlighting the significance of energy-efficient deep learning, innovative randomization techniques in neural networks, the potential of reservoir computing, and the cutting-edge realm of neuromorphic computing. This webinar aims to connect theoretical knowledge with practical applications and provide insights into how these innovative approaches can lead to more robust, efficient, and environmentally conscious AI systems.
Webinar Speaker: Prof. Claudio Gallicchio, Assistant Professor, University of Pisa
Claudio Gallicchio is an Assistant Professor at the Department of Computer Science of the University of Pisa, Italy. His research involves merging concepts from Deep Learning, Dynamical Systems, and Randomized Neural Systems, and he has co-authored over 100 scientific publications on the subject. He is the founder of the IEEE CIS Task Force on Reservoir Computing, and the co-founder and chair of the IEEE Task Force on Randomization-based Neural Networks and Learning Systems. He is an associate editor of IEEE Transactions on Neural Networks and Learning Systems (TNNLS).
This presentation by Nathaniel Lane, Associate Professor in Economics at Oxford University, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
This presentation by Yong Lim, Professor of Economic Law at Seoul National University School of Law, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
XP 2024 presentation: A New Look to Leadershipsamililja
Presentation slides from XP2024 conference, Bolzano IT. The slides describe a new view to leadership and combines it with anthro-complexity (aka cynefin).
This presentation by Thibault Schrepel, Associate Professor of Law at Vrije Universiteit Amsterdam University, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
Why Psychological Safety Matters for Software Teams - ACE 2024 - Ben Linders.pdfBen Linders
Psychological safety in teams is important; team members must feel safe and able to communicate and collaborate effectively to deliver value. It’s also necessary to build long-lasting teams since things will happen and relationships will be strained.
But, how safe is a team? How can we determine if there are any factors that make the team unsafe or have an impact on the team’s culture?
In this mini-workshop, we’ll play games for psychological safety and team culture utilizing a deck of coaching cards, The Psychological Safety Cards. We will learn how to use gamification to gain a better understanding of what’s going on in teams. Individuals share what they have learned from working in teams, what has impacted the team’s safety and culture, and what has led to positive change.
Different game formats will be played in groups in parallel. Examples are an ice-breaker to get people talking about psychological safety, a constellation where people take positions about aspects of psychological safety in their team or organization, and collaborative card games where people work together to create an environment that fosters psychological safety.
This presentation by OECD, OECD Secretariat, was made during the discussion “Competition and Regulation in Professions and Occupations” held at the 77th meeting of the OECD Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found at oe.cd/crps.
This presentation was uploaded with the author’s consent.
This presentation by OECD, OECD Secretariat, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
1.) Introduction
Our Movement is not new; it is the same as it was for Freedom, Justice, and Equality since we were labeled as slaves. However, this movement at its core must entail economics.
2.) Historical Context
This is the same movement because none of the previous movements, such as boycotts, were ever completed. For some, maybe, but for the most part, it’s just a place to keep your stable until you’re ready to assimilate them into your system. The rest of the crabs are left in the world’s worst parts, begging for scraps.
3.) Economic Empowerment
Our Movement aims to show that it is indeed possible for the less fortunate to establish their economic system. Everyone else – Caucasian, Asian, Mexican, Israeli, Jews, etc. – has their systems, and they all set up and usurp money from the less fortunate. So, the less fortunate buy from every one of them, yet none of them buy from the less fortunate. Moreover, the less fortunate really don’t have anything to sell.
4.) Collaboration with Organizations
Our Movement will demonstrate how organizations such as the National Association for the Advancement of Colored People, National Urban League, Black Lives Matter, and others can assist in creating a much more indestructible Black Wall Street.
5.) Vision for the Future
Our Movement will not settle for less than those who came before us and stopped before the rights were equal. The economy, jobs, healthcare, education, housing, incarceration – everything is unfair, and what isn’t is rigged for the less fortunate to fail, as evidenced in society.
6.) Call to Action
Our movement has started and implemented everything needed for the advancement of the economic system. There are positions for only those who understand the importance of this movement, as failure to address it will continue the degradation of the people deemed less fortunate.
No, this isn’t Noah’s Ark, nor am I a Prophet. I’m just a man who wrote a couple of books, created a magnificent website: http://www.thearkproject.llc, and who truly hopes to try and initiate a truly sustainable economic system for deprived people. We may not all have the same beliefs, but if our methods are tried, tested, and proven, we can come together and help others. My website: http://www.thearkproject.llc is very informative and considerably controversial. Please check it out, and if you are afraid, leave immediately; it’s no place for cowards. The last Prophet said: “Whoever among you sees an evil action, then let him change it with his hand [by taking action]; if he cannot, then with his tongue [by speaking out]; and if he cannot, then, with his heart – and that is the weakest of faith.” [Sahih Muslim] If we all, or even some of us, did this, there would be significant change. We are able to witness it on small and grand scales, for example, from climate control to business partnerships. I encourage, invite, and challenge you all to support me by visiting my website.
2. February 5-8, 2013
Motion in Two Dimensions
Reminder of vectors and vector algebra
Displacement and position in 2-D
Average and instantaneous velocity in 2-D
Average and instantaneous acceleration in 2-D
Projectile motion
Uniform circular motion
Relative velocity*
3. February 5-8, 2013
Vector and its components
The components are the
legs of the right triangle
whose hypotenuse is A
y
x A
A
A
2 2 1
tan y
x y
x
A
A A A and
A
)
sin(
)
cos(
A
A
A
A
y
x
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x
y
x
y
y
x
A
A
A
A
A
A
A
1
2
2
tan
or
tan
4. February 5-8, 2013
Which diagram can represent ?
A) B)
C) D)
Vector Algebra
1
2 r
r
r
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r
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5. February 5-8, 2013
Kinematic variables in one dimension
Position: x(t) m
Velocity: v(t) m/s
Acceleration: a(t) m/s2
Kinematic variables in three dimensions
Position: m
Velocity: m/s
Acceleration: m/s2
All are vectors: have direction and
magnitudes
Motion in two dimensions
k
v
j
v
i
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x
ˆ
ˆ
ˆ
)
(
6. February 5-8, 2013
In one dimension
In two dimensions
Position: the position of an object is
described by its position vector
--always points to particle from origin.
Displacement:
x1 (t1) = - 3.0 m, x2 (t2) = + 1.0 m
Δx = +1.0 m + 3.0 m = +4.0 m
Position and Displacement
)
(t
r
1
2 r
r
r
j
y
i
x
j
y
y
i
x
x
j
y
i
x
j
y
i
x
r
ˆ
ˆ
ˆ
)
(
ˆ
)
(
)
ˆ
ˆ
(
)
ˆ
ˆ
(
1
2
1
2
1
1
2
2
)
(
)
( 1
1
2
2 t
x
t
x
x
1
2 r
r
r
7. February 5-8, 2013
Average velocity
Instantaneous velocity
v is tangent to the path in x-y graph;
Average & Instantaneous Velocity
dt
r
d
t
r
v
v
t
avg
0
0
t
lim
lim
j
v
i
v
j
t
y
i
t
x
v y
avg
x
avg
avg
ˆ
ˆ
ˆ
ˆ ,
,
t
r
vavg
j
v
i
v
j
dt
dy
i
dt
dx
dt
r
d
v y
x
ˆ
ˆ
ˆ
ˆ
8. February 5-8, 2013
Motion of a Turtle
A turtle starts at the origin and moves with the speed of v0=10 cm/s in
the direction of 25° to the horizontal.
(a) Find the coordinates of a turtle 10 seconds later.
(b) How far did the turtle walk in 10 seconds?
9. February 5-8, 2013
Motion of a Turtle
Notice, you can solve the
equations independently for the
horizontal (x) and vertical (y)
components of motion and then
combine them!
y
x v
v
v
0
0 0 cos25 9.06 cm/s
x
v v
X components:
Y components:
Distance from the origin:
0 90.6 cm
x
x v t
0 0 sin 25 4.23 cm/s
y
v v
0 42.3 cm
y
y v t
cm
0
.
100
2
2
y
x
d
10. February 5-8, 2013
Average acceleration
Instantaneous acceleration
The magnitude of the velocity (the speed) can change
The direction of the velocity can change, even though the
magnitude is constant
Both the magnitude and the direction can change
Average & Instantaneous Acceleration
dt
v
d
t
v
a
a
t
avg
0
0
t
lim
lim
j
a
i
a
j
t
v
i
t
v
a y
avg
x
avg
y
x
avg
ˆ
ˆ
ˆ
ˆ ,
,
t
v
aavg
j
a
i
a
j
dt
dv
i
dt
dv
dt
v
d
a y
x
y
x ˆ
ˆ
ˆ
ˆ
11. February 5-8, 2013
Position
Average velocity
Instantaneous velocity
Acceleration
are not necessarily same direction.
Summary in two dimension
j
y
i
x
t
r ˆ
ˆ
)
(
j
a
i
a
j
dt
dv
i
dt
dv
dt
v
d
t
v
t
a y
x
y
x
t
ˆ
ˆ
ˆ
ˆ
lim
)
(
0
j
v
i
v
j
t
y
i
t
x
t
r
v y
avg
x
avg
avg
ˆ
ˆ
ˆ
ˆ ,
,
j
v
i
v
j
dt
dy
i
dt
dx
dt
r
d
t
r
t
v y
x
t
ˆ
ˆ
ˆ
ˆ
lim
)
(
0
dt
dx
vx
dt
dy
vy
2
2
dt
x
d
dt
dv
a x
x
2
2
dt
y
d
dt
dv
a
y
y
)
(
and
),
(
, t
a
t
v
(t)
r
12. February 5-8, 2013
Motion in two dimensions
t
a
v
v
0
Motions in each dimension are independent components
Constant acceleration equations
Constant acceleration equations hold in each dimension
t = 0 beginning of the process;
where ax and ay are constant;
Initial velocity initial displacement ;
2
2
1
0 t
a
t
v
r
r
t
a
v
v y
y
y
0
2
2
1
0
0 t
a
t
v
y
y y
y
)
(
2 0
2
0
2
y
y
a
v
v y
y
y
t
a
v
v x
x
x
0
2
2
1
0
0 t
a
t
v
x
x x
x
)
(
2 0
2
0
2
x
x
a
v
v x
x
x
j
a
i
a
a y
x
ˆ
ˆ
j
v
i
v
v y
x
ˆ
ˆ 0
0
0
j
y
i
x
r ˆ
ˆ 0
0
0
13. February 5-8, 2013
Define coordinate system. Make sketch showing axes, origin.
List known quantities. Find v0x , v0y , ax , ay , etc. Show initial
conditions on sketch.
List equations of motion to see which ones to use.
Time t is the same for x and y directions.
x0 = x(t = 0), y0 = y(t = 0), v0x = vx(t = 0), v0y = vy(t = 0).
Have an axis point along the direction of a if it is constant.
Hints for solving problems
t
a
v
v y
y
y
0
2
2
1
0
0 t
a
t
v
y
y y
y
)
(
2 0
2
0
2
y
y
a
v
v y
y
y
t
a
v
v x
x
x
0
2
2
1
0
0 t
a
t
v
x
x x
x
)
(
2 0
2
0
2
x
x
a
v
v x
x
x
14. February 5-8, 2013
2-D problem and define a coordinate
system: x- horizontal, y- vertical (up +)
Try to pick x0 = 0, y0 = 0 at t = 0
Horizontal motion + Vertical motion
Horizontal: ax = 0 , constant velocity motion
Vertical: ay = -g = -9.8 m/s2, v0y = 0
Equations:
Projectile Motion
2
2
1
gt
t
v
y
y iy
i
f
t
a
v
v y
y
y
0
2
2
1
0
0 t
a
t
v
y
y y
y
)
(
2 0
2
0
2
y
y
a
v
v y
y
y
t
a
v
v x
x
x
0
2
2
1
0
0 t
a
t
v
x
x x
x
)
(
2 0
2
0
2
x
x
a
v
v x
x
x
Horizontal Vertical
15. February 5-8, 2013
X and Y motions happen independently, so
we can treat them separately
Try to pick x0 = 0, y0 = 0 at t = 0
Horizontal motion + Vertical motion
Horizontal: ax = 0 , constant velocity motion
Vertical: ay = -g = -9.8 m/s2
x and y are connected by time t
y(x) is a parabola
Projectile Motion
gt
v
v y
y
0
2
2
1
0
0 gt
t
v
y
y y
x
x v
v 0
t
v
x
x x
0
0
Horizontal Vertical
16. February 5-8, 2013
2-D problem and define a coordinate system.
Horizontal: ax = 0 and vertical: ay = -g.
Try to pick x0 = 0, y0 = 0 at t = 0.
Velocity initial conditions:
v0 can have x, y components.
v0x is constant usually.
v0y changes continuously.
Equations:
Projectile Motion
0
0
0 cos
v
v x
Horizontal Vertical
0
0
0 sin
v
v x
gt
v
v y
y
0
2
2
1
0
0 gt
t
v
y
y y
x
x v
v 0
t
v
x
x x
0
0
17. February 5-8, 2013
Initial conditions (t = 0): x0 = 0, y0 = 0
v0x = v0 cosθ0 and v0y = v0 sinθ0
Horizontal motion:
Vertical motion:
Parabola;
θ0 = 0 and θ0 = 90 ?
Trajectory of Projectile Motion
2
2
1
0
0 gt
t
v
y y
x
x
v
x
t
t
v
x
0
0
0
2
0
0
0
2
x
x
y
v
x
g
v
x
v
y
2
0
2
2
0
0
cos
2
tan x
v
g
x
y
18. February 5-8, 2013
Initial conditions (t = 0): x0 = 0, y0 = 0
v0x = v0 cosθ0 and v0x = v0 sinθ0, then
What is R and h ?
Horizontal Vertical
2
2
1
0
0
0 gt
t
v y
t
v
x x
0
0
g
v
g
v
v
t
v
x
x
R x
0
2
0
0
0
0
0
0
0
2
sin
sin
cos
2
g
v
g
v
t
y 0
0
0 sin
2
2
2
0
2
2
1
0
0
2
2
2
t
g
t
v
gt
t
v
y
y
h y
h
h
y
g
v
h
2
sin 0
2
2
0
y
y
y
y
y v
g
v
g
v
gt
v
v 0
0
0
0
2
h
gt
v
v y
y
0
2
2
1
0
0 gt
t
v
y
y y
x
x v
v 0
t
v
x
x x
0
0
19. February 5-8, 2013
Projectile Motion
at Various Initial Angles
Complementary
values of the initial
angle result in the
same range
The heights will be
different
The maximum range
occurs at a projection
angle of 45o
g
v
R
2
sin
2
0
20. February 5-8, 2013
Uniform circular motion
Constant speed, or,
constant magnitude of velocity
Motion along a circle:
Changing direction of velocity
21. February 5-8, 2013
Circular Motion: Observations
Object moving along a
curved path with constant
speed
Magnitude of velocity: same
Direction of velocity: changing
Velocity: changing
Acceleration is NOT zero!
Net force acting on the
object is NOT zero
“Centripetal force” a
m
Fnet
22. February 5-8, 2013
Centripetal acceleration
Direction: Centripetal
Uniform Circular Motion
r
v
t
v
a
r
v
r
v
t
r
t
v
r
r
v
v
r
r
v
v
r
2
2
so,
O
x
y
ri
R
A B
vi
rf
vf
Δr
vi
vf
Δv = vf - vi
23. February 5-8, 2013
Uniform Circular Motion
Velocity:
Magnitude: constant v
The direction of the velocity is
tangent to the circle
Acceleration:
Magnitude:
directed toward the center of
the circle of motion
Period:
time interval required for one
complete revolution of the
particle
r
v
ac
2
r
v
ac
2
v
r
T
2
v
ac
24. February 5-8, 2013
Position
Average velocity
Instantaneous velocity
Acceleration
are not necessarily in the same direction.
Summary
j
y
i
x
t
r ˆ
ˆ
)
(
j
a
i
a
j
dt
dv
i
dt
dv
dt
v
d
t
v
t
a y
x
y
x
t
ˆ
ˆ
ˆ
ˆ
lim
)
(
0
j
v
i
v
j
t
y
i
t
x
t
r
v y
avg
x
avg
avg
ˆ
ˆ
ˆ
ˆ ,
,
j
v
i
v
j
dt
dy
i
dt
dx
dt
r
d
t
r
t
v y
x
t
ˆ
ˆ
ˆ
ˆ
lim
)
(
0
dt
dx
vx
dt
dy
vy
2
2
dt
x
d
dt
dv
a x
x
2
2
dt
y
d
dt
dv
a
y
y
)
(
and
),
(
, t
a
t
v
(t)
r
25. February 5-8, 2013
If a particle moves with constant acceleration a, motion
equations are
Projectile motion is one type of 2-D motion under constant
acceleration, where ax = 0, ay = -g.
Summary
j
t
a
t
v
y
i
t
a
t
v
x
j
y
i
x
r yi
yi
i
xi
xi
i
f
f
f
ˆ
)
(
ˆ
)
(
ˆ
ˆ 2
2
1
2
2
1
j
t
a
v
i
t
a
v
j
v
i
v
t
v y
iy
x
ix
fy
fx
f
ˆ
)
(
ˆ
)
(
ˆ
ˆ
)
(
t
a
v
v i
2
2
1
t
a
t
v
r
r i
i
f