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In this lesson we extend our knowledge of Uniformly Accelerated Motion to include freely falling objects. We talk about what Free-Fall means, how to work with it and how to identify and object in Free-Fall. Today I get to introduce so many of my favorites: the medicine ball, the vacuum that you can breathe and, of course, little g.
Content Times:
0:22 An Example of An Object in Free-Fall
0:54 Textbook definition of a freely falling object
1:11 We have not defined a "Force" so this is how we define Free-Fall
2:07 No Air Resistance (The Vacuum that You Can Breathe!)
3:10 What does it mean to be in Free-Fall? (The Acceleration due to Gravity)
4:41 The Acceleration due to Gravity - Not on Earth
5:24 g is not constant on Earth. Very close, but not quite
5:56 Common Misconception: Objects moving upward can be freely falling
6:35 Free-Fall is Uniformly Accelerated Motion
7:27 What does the negative mean in -9.81 m/s^2?
7:57 Is "g" positive or negative?
9:01 How can "g" be not constant and we can use UAM?
10:03 Does mass effect the acceleration due to gravity?
10:47 The Review
Want Lecture Notes?
Previous Video: Reviewing One Dimensional Motion with the Table of Friends
Next Video: Apollo 15 Feather and Hammer Drop
Found by Flipping Physics in One-Dimensional Motion
December 22, 2013 at 12:14 PM
Ages: 13 - 18
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Dr. Skateboard's Action Science is designed to incorporate both classroom activities that focus on concepts in physical science that integrate action sports, including skateboarding and Bicycle Motocross (BMX). Dr. Robertson acts as both the narrator and a performer in the series, which also includes top extreme athletes in BMX and skateboarding. This brief segment focuses on explaining the center of gravity. (01:27)
Found by begamatt in Gravity
March 26, 2011 at 05:22 PM
Ages: 8 - 14
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This thirty-minute video explains gravity. The study of gravity has played a central role in the history of science—from Galileo and Newton to Einstein's twentieth century theory of general relativity. Yet, in spite of five centuries of study, many aspects of gravity remain a mystery. How can gravity, which in many ways is the dominant force in the universe, be at the same time, by far, the weakest of the four known forces in nature? See how physicists are approaching this question through two topics of intense research in gravitational physics today: short-scale measurements of gravity's inverse-square law, and the search for ripples in space-time known as gravitational waves. This video, which as a printable script, features interviews with experts as well as excellent graphics to help show students what gravitation may look like. For sophisticated students. (28:25)
Found by freealan in Gravity
May 14, 2011 at 10:09 PM
Ages: 12 - 18
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This 30-second video has no sound, just captions, as it details the definition of gravity. (00:31)
Found by teresahopson in Gravity
April 21, 2010 at 09:19 PM
Ages: 7 - 14
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One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute! In this episode, we discuss the basic nature of gravity, one of the four fundamental forces in our universe. (01:28)
Found by teresahopson in Gravity
May 13, 2012 at 07:59 AM
Ages: 11 - 18
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Cute song with great video and graphics about gravity. (03:16)
Found by suedoo in Gravity
January 17, 2014 at 05:18 PM
Ages: 8 - 15
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This is a live video chat. The narrator was asked, “Why do black holes have such stronger gravity than the stars they formed from?” Here's the answer, gravity depends upon two things, the mass of the object and how far away you are from it. The mass of a star when it collapses the core forms a black hole, so now you can get closer to it and the gravity draws you in. Video is somewhat confusing - the narrator speaks fast and may be hard for young students to understand. (04:11)
Found by Barb in Black Holes
July 26, 2009 at 02:20 PM
Ages: 9 - 16
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This cartoon uses simple illustrations and explanations to help teach about gravity. (05:27)
Found by MakeMeGenius in Gravity
April 9, 2012 at 08:09 PM
Ages: 7 - 12
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Calculus is used to determine the force of gravity and the gravitational potential energy between an object and a planet, inside and outside the planet. Equations and graphs are determined and discussed. Want gravity-zero-infinity.html ">Lecture Notes? This is an AP Physics C: Mechanics topic.
Content Times:
0:01 Basic universal gravitation equations
1:07 Outside the planet
1:42 Assumptions for inside the planet
3:38 Deriving mass inside r
4:23 Determining the equation for force of gravity inside the planet
5:24 Graphing the force of gravity inside the planet
5:59 Determining the equation for universal gravitational potential energy inside the planet
7:37 Solving for the constant C
8:49 The equation for universal gravitational potential energy inside the planet
9:41 Looking over the graphs
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Thank you to Sawdog, Scott Carter, and Christopher Becke for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.
Found by Flipping Physics in Gravity
March 11, 2018 at 04:58 PM
Ages: 11 - 18
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Resolve the force of gravity into its parallel and perpendicular components so you can sum the forces.()06:34)
Found by Flipping Physics in Gravity
October 8, 2015 at 01:24 PM
Ages: 12 - 18
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Who's faster over 10 meters - the fastest sprinter in the world or gravity? A great physics problem for high school physics students. The problem is presented with stick figures to help visualize it. (01:25)
Found by tyler.arnold in Gravity
September 18, 2012 at 08:31 PM
Ages: 16 - 18
License: Public Domain
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Why Gravity Gets So Strong Near Dense Objects (08:13)
Found by teresahopson in Khan Academy -Stars
June 4, 2012 at 07:13 PM
Ages: 13 - 18
License: CC by-nc-nd
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The spectacular sight of mountain goats defying gravity on a vertical dam wall in Italy, and all because they are have a craving for some of Earth's elements essential to life. (03:52)
Found by teresahopson in Goats
December 14, 2020 at 06:21 PM
Ages: 7 - 18
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Astrophysicist Janna Levin, PhD, is asked to explain the concept of gravity to 5 different people; a child, a teen, a college student, a grad student, and an expert.(36:31)
Found by teresahopson in Gravity
February 2, 2020 at 03:59 PM
Ages: 13 - 18
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Watch a short biography of Isaac Newton, a key figure in the scientific revolution who is most famous for formulating laws of gravity. (03:32)
Found by teresahopson in Historical Biography
September 14, 2022 at 12:55 PM
Ages: 13 - 18
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I'm sure you've all heard about Isaac Newton and that apple that fell on his head and how that was a huge deal to our understanding of gravity. Well... let's.talk about that. In this episode of Crash Course Physics, Shini sits down to talk about the realities of the apple story and how Newtonian Gravity is more than a little important. (09:20)
Found by teresahopson in Newton, Isaac
April 4, 2022 at 09:03 AM
Ages: 14 - 18
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Einstein believed it would be impossible to measure gravitational waves directly, but we are now reaching the point where we do have technologies that can actually measure it. This video describes new discoveries in the science of gravitational waves. (03:38)
Found by olgerb in General Overview
September 5, 2013 at 04:18 PM
Ages: 12 - 18
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Its time for a no-holds barred match to see who was right Aristotle or Galileo as we answer the question.. Do heavier objects fall faster than lighter objects? And, of course, what Mr. O video would be complete without something just plain ridiculous like say dropping water balloons off a 20+ foot balcony. (Yes, it was fun, but dont try it at home kiddies!). (05:31)
Found by begamatt in Gravity
March 31, 2011 at 04:28 PM
Ages: 8 - 16
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In 1907, a young Albert Einstein was looking for a way to extend his special theory of relativity to include acceleration. It took him eight years to come up with general theory of relativity. This excellent video introduces the student to Einstein's theory in a very accessible and visual way. (03:12)
Found by olgerb in Gravity
September 5, 2013 at 04:17 PM
Ages: 12 - 18
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Together, space- and ground-based gravitational wave detectors will open a new field in astronomy, gravitational wave astronomy. This video describes techniques used to measure gravitational forces. (04:02)
Found by olgerb in The Universe
September 5, 2013 at 04:21 PM
Ages: 12 - 18
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This ten-minute video It talks about the four fundamental interactions of gravitation, weak interaction,electromagnetism, and strong interaction. The video uses a smart board and a narrator. (10:29)
Found by freealan in Gravity - Khan Academy
August 14, 2011 at 10:19 PM
Ages: 10 - 18
License: CC by-nc-nd
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A demonstration of how beads react when thrown over the edge of a balcony in a long string. ------------------- If you like this series, please subscribe. Ha...
Found by jahiggins in Momentum
September 19, 2014 at 05:49 AM
Ages: 13 - 18
License: CC by-sa
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Why do astronauts appear weightless despite being near the Earth? (07:12)
Found by teresahopson in Gravity - Khan Academy
June 13, 2011 at 08:39 PM
Ages: 13 - 18
License: CC by-nc-nd
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The boy featured in this video has concerns about spinning through space on Earth until he is introduced to a Foucault pendulum. He learns that French scientist Jean Bernard Léon Foucault used his knowledge of pendulums to demonstrate Earth’s rotation and how that movement is a steady, measurable motion rather than a dangerous one. KET adapted this video from the original produced by the Lexington Public Library in Lexington, KY. (05:46)
Found by begamatt in Gravity
November 3, 2010 at 09:17 PM
Ages: 7 - 12
License: Proprietary
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Views: 2364 |
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