This document summarizes a physics lecture about freely falling objects and Galileo's experiments demonstrating that all objects accelerate at the same rate when falling near the Earth's surface. It discusses Galileo using a pendulum with a fixed peg to show that the pendulum swings faster when coming from the tighter arc, representing a steeper "ramp". It also describes Galileo's experiment timing a ball rolling down an inclined plane and comparing that to the time of a free fall, finding that acceleration is constant. The document concludes that Galileo established the acceleration due to gravity, g, which can be measured by timing falls.
Hello! This is my PowerPoint Presentation on free falling bodies.
Some transition might failed when viewing. so if you want a better presentation using this, you could ask me.
The Galileo vs Aristotle part is kind-of a video presentation. You could find a better video on Youtube.
For further question, just comment on the comment box below.
or
Send me an Email ( glydelle27@gmail.com )
Hello! This is my PowerPoint Presentation on free falling bodies.
Some transition might failed when viewing. so if you want a better presentation using this, you could ask me.
The Galileo vs Aristotle part is kind-of a video presentation. You could find a better video on Youtube.
For further question, just comment on the comment box below.
or
Send me an Email ( glydelle27@gmail.com )
Describes displacement, velocity, acceleration as vectors and distance and speed as scalars, Show all needed equations and their use.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
the relation between force and motion id described in Newtons three laws of motion. These laws are very simple statements and enable us to describe the future (or past) motion of body if we know the forces acting on it.
Describes displacement, velocity, acceleration as vectors and distance and speed as scalars, Show all needed equations and their use.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
the relation between force and motion id described in Newtons three laws of motion. These laws are very simple statements and enable us to describe the future (or past) motion of body if we know the forces acting on it.
This PowerPoint is one small part of the Matter, Energy, and the Environment Unit from www.sciencepowerpoint.com. This unit consists of a five part 3,500+ slide PowerPoint roadmap, 12 page bundled homework package, modified homework, detailed answer keys, 20 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow are meaningful. The PowerPoint includes built-in instructions, visuals, and review questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation.
Areas of Focus: Matter, Dark Matter, Elements and Compounds, States of Matter, Solids, Liquids, Gases, Plasma, Law Conservation of Matter, Physical Change, Chemical Change, Gas Laws, Charles Law, Avogadro's Law, Ideal Gas Law, Pascal's Law, Archimedes Principle, Buoyancy, Seven Forms of Energy, Nuclear Energy, Electromagnet Spectrum, Waves / Wavelengths, Light (Visible Light), Refraction, Diffraction, Lens, Convex / Concave, Radiation, Electricity, Lightning, Static Electricity, Magnetism, Coulomb's Law, Conductors, Insulators, Semi-conductors, AC and DC current, Amps, Watts, Resistance, Magnetism, Faraday's Law, Compass, Relativity, Einstein, and E=MC2, Energy, First Law of Thermodynamics, Second Law of Thermodynamics-Third Law of Thermodynamics, Industrial Processes, Environmental Studies, The 4 R's, Sustainability, Human Population Growth, Carrying Capacity, Green Design, Renewable Forms of Energy (The 11th Hour)
This unit aligns with the Next Generation Science Standards and with Common Core Standards for ELA and Literacy for Science and Technical Subjects. See preview for more information
If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
Teaching Duration = 4+ Weeks
Newton's 1st law of motion ~by A.S.KhanA.Samad Khan
Heyo! This is a presentation on Newton's 1st Law of motion for you guys! There are Many GIFs (Animated Pictures) & a Video also on 1st Law which makes the PPT much more interesting.They will not work in Preview . You gotta download it to make'em work.Hope you Like it! :)
~Sam5010
some of the links from the first page are messed up. I recommend you just go through it in order
I also meant cm squared on the pressure units, slide 23
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The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
How to Create Map Views in the Odoo 17 ERPCeline George
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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2. Today’s Topics
• In the previous lecture, we analyzed one-
dimensional motion, defining displacement,
velocity, and acceleration and finding formulas
for motion at constant acceleration.
• Today we’ll apply those formulas to objects
falling, but first we’ll review how we know
that falling motion is at constant acceleration.
3. Galileo’s Idea
• Before Galileo, it was believed that falling
objects quickly reached a natural speed,
proportional to weight, then fell at that speed.
• Galileo argued that in fact falling objects
continue to pick up speed (unless air
resistance dominates) and that this
acceleration is the same for all objects.
• But how to convince people? Watching a
falling object, it’s all over so quickly.
4. Dropping a Brick
• Galileo claimed people already knew this without
realizing it:
• Imagine driving a nail into a board by dropping a
weight on it from various heights. Everyone
already knows that the further it falls, the more
impact—which must mean it’s moving faster.
• But how much faster? Not so easy to tell!
Is there some way to slow down the motion?
5. Slowing down the motion…
• A feather falls slowly—but Galileo argued that
that motion (fairly steady speed) was
dominated by air resistance, so was unlike
ordinary falling of a weighty object.
• He found another way to slow things down …
here’s his experiment—in two parts, the
pendulum and the ramp.
6. A Two-Timing Pendulum
• Pendulum with peg • First he took a
pendulum swinging
freely back and forth,
then he introduced a
fixed peg directly below
the point the pendulum
hangs from.
7. A Two-Timing Pendulum
• Pendulum with peg
• The pendulum will now
move around a tighter
arc on the right-hand
side.
8. Clicker Question: Which is correct?
A. The pendulum is moving faster at the lowest point
when it is coming in from the left (from the wider arc).
B. The pendulum is moving faster at the bottom when it
is coming in from the right (from the tighter arc).
C. The pendulum speed at the bottom is the same either
way.
(All neglecting the small effects of air resistance.)
9. Galileo’s Ramp Idea
• Galileo argued that his two-sided pendulum was like
two ramps,
one steep and one shallow, and a ball rolling to the
bottom would have the same speed from either side.
And why not take one side vertically steep? Then the
ball would just be falling!
10. Rolling Down the Ramp is Slow Mo
Falling
• If rolling down the ramp the ball picks up the
same speed that it would by just falling the
same vertical distance, timing the slow roll can
check Galileo’s claim that speed is picked up
uniformly in falling!
• In particular, Galileo compared the times for
the full distance roll and that for one-quarter
of the full distance. We’ll do this.
11. Galileo’s Ramp Experiment Result
• Galileo found that in twice the time, the ball
rolled four times the distance.
• This agrees with the constant acceleration
formula for motion starting from rest at the
origin:
• He also checked many other distances and
found good agreement.
21
2x at=
12. Clicker Question
• Suppose in rolling down the ramp from rest at
the top the ball is moving at 4 m/s at the bottom.
What is its speed half way down the ramp?
A. 2 m/s
B. less than 2 m/s
C. more than 2 m/s.
(Neglect friction.)
13. Acceleration Due to Gravity g
• Having established that in the absence of air
resistance all objects fall (near the Earth’s surface)
with the same acceleration g, g can be measured by
timing a fall and using Demo: chain of spaced weights.
• Taking upwards as positive, velocity and position as
functions of time will look like this:
21
2 .y gt=
O
t
y(t)
O
t
v(t)
v(t) = - gt
y(t) = -½gt2
14. Ball Thrown Vertically Upwards
• Having chosen upwards as positive, the
acceleration a = -g = -9.8 m/s2.
• While the ball is moving upwards it is losing speed
at this rate.
• The velocity/time graph:
v(t) = v0 – gt.
• The slope of the line is the acceleration a = -g.
O
t
v(t)
v0
15. Clicker Question
A ball is thrown vertically upwards. What is the
direction of its acceleration at the highest point
it reaches?
A. Downwards
B. Upwards
C. At that point, the acceleration is zero.