This document contains notes from a review of motion, speed, and velocity. It includes definitions, equations, example problems and their solutions related to these concepts. Speed is defined as the distance traveled over a period of time. Velocity includes both speed and direction of motion. Examples show how to calculate speed from distance and time, or time from distance and speed. Average speed is the total distance divided by the total time.
Acceleration and Equations of Motion(1st)Talal Khan
Chapter 03Kinematics of Linear Motion(Acceleration and Equations of Motion)Lec-12
Learning Objectives
Review
Velocity and Acceleration
Review Problems
1st Equation of motion
Home Task
VelocityVelocity is displacement covered in any time ORVelocity is speed and direction. SI unit m/s(푽_풂풗 ) ⃗=푺 ⃗/풕
Types of Velocity1.Uniform Velocity. Displacement does not change with time.2. Variable VelocityDisplacement changes with time
AccelerationChange in velocity of a body in some time is called Acceleration. SI unit m/s2 푽_풇−푽_풊=(∆푽) ⃗푪풉풂풏품풆 풊풏 풗풆풍풐풄풊풕풚 풊풏 풖풏풊풕 풕풊풎풆=(∆푽) ⃗/∆풕 풂 ⃗= (∆푽) ⃗/∆풕
AccelerationAcceleration can be positive and negative based on velocity.If the velocity of body is increasing, it will posses Acceleration.If the velocity of body is decreasing, it will undergo deceleration or retardation.
Similar Problems. (Do it yourself)Example(P.38). A car is moving with uniform acceleration and attains the velocity of 72 Km11-1 in 5 min. Find acceleration of the car. Problem(3.2) A person hears the echo of his own sound from a distant hill after 2 seconds. How far away is the person from the hill, if the speed of sound is 330 ms-1Problem(3.3) Find the acceleration of a body whose velocity increases from 11ms-1 to 33 ms-1 in 10 seconds.Problem (3.3) A car moving with a velocity of 36 kmh-1 is brought to rest in 5 seconds; calculate its deceleration.
Equations of Motion.First Equation of MotionSuppose a body is moving with initial velocity vi and.is under going uniform acceleration "a" for a time "t" such that its final velocity becomes vf.Change in velocity of the body in time t = vf - viTherefore change in velocity in unit time = "vf − vi" /푡As change in velocity in unit time (i.e. the rate of change velocity) is called acceleration.
Equations of Motion.First Equation of MotionTherefore a= "vf − vi" /푡vf - vi = at∴ vf = vi - at ------ (1)This is called First Equation of Motion
Home Task
Write the Definitions of velocity, acceleration, their formula and probelems.
Thank You For Your Cooperation
You can find this presentation on Slideshare.com “Acceleration and Equation of Motion”
Acceleration and Equations of Motion(1st)Talal Khan
Chapter 03Kinematics of Linear Motion(Acceleration and Equations of Motion)Lec-12
Learning Objectives
Review
Velocity and Acceleration
Review Problems
1st Equation of motion
Home Task
VelocityVelocity is displacement covered in any time ORVelocity is speed and direction. SI unit m/s(푽_풂풗 ) ⃗=푺 ⃗/풕
Types of Velocity1.Uniform Velocity. Displacement does not change with time.2. Variable VelocityDisplacement changes with time
AccelerationChange in velocity of a body in some time is called Acceleration. SI unit m/s2 푽_풇−푽_풊=(∆푽) ⃗푪풉풂풏품풆 풊풏 풗풆풍풐풄풊풕풚 풊풏 풖풏풊풕 풕풊풎풆=(∆푽) ⃗/∆풕 풂 ⃗= (∆푽) ⃗/∆풕
AccelerationAcceleration can be positive and negative based on velocity.If the velocity of body is increasing, it will posses Acceleration.If the velocity of body is decreasing, it will undergo deceleration or retardation.
Similar Problems. (Do it yourself)Example(P.38). A car is moving with uniform acceleration and attains the velocity of 72 Km11-1 in 5 min. Find acceleration of the car. Problem(3.2) A person hears the echo of his own sound from a distant hill after 2 seconds. How far away is the person from the hill, if the speed of sound is 330 ms-1Problem(3.3) Find the acceleration of a body whose velocity increases from 11ms-1 to 33 ms-1 in 10 seconds.Problem (3.3) A car moving with a velocity of 36 kmh-1 is brought to rest in 5 seconds; calculate its deceleration.
Equations of Motion.First Equation of MotionSuppose a body is moving with initial velocity vi and.is under going uniform acceleration "a" for a time "t" such that its final velocity becomes vf.Change in velocity of the body in time t = vf - viTherefore change in velocity in unit time = "vf − vi" /푡As change in velocity in unit time (i.e. the rate of change velocity) is called acceleration.
Equations of Motion.First Equation of MotionTherefore a= "vf − vi" /푡vf - vi = at∴ vf = vi - at ------ (1)This is called First Equation of Motion
Home Task
Write the Definitions of velocity, acceleration, their formula and probelems.
Thank You For Your Cooperation
You can find this presentation on Slideshare.com “Acceleration and Equation of Motion”
A PowerPoint made by me. It covers all the Motion related topics. Revised edition will be established on the 14th October 2015.
Please download or leave a like, down below:
A PowerPoint made by me. It covers all the Motion related topics. Revised edition will be established on the 14th October 2015.
Please download or leave a like, down below:
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3. Cornell Notes
Copyright Richards 2009
Cue Column
Question
Notes Column
(Answers)
Page 90-91
Title: Motion Date: 4/12/2013
Question 4:
What is speed?
IV. Speed is the distance an object travels in one unit of
time.
A. To calculate speed, divide the distance an object
travels by the amount of time it takes to travel
that distance.
B. The speed equation can be rewritten to solve
different types of speed problems.
Distance
Time
Speed =
Distance
Speed Time
24. What is average speed?
B. Average speed is the total distance
the object travels divided by the
total time the object takes to travel
that distance.
Average Speed = Total Distance
Total Time