Wearing a helmet is all about impulse, change in momentum and the force of impact. This video illustrates why you should secure your helmet to your head. Thank you very much to Colton and Jean Johnson who said yes when I asked them if I could film ...myself riding my bike off their dock. Colton also said, “In my 75 years of living, that has got to be the strangest request I have ever received.” Thank you also to Chris Palmer and Larry Braak for being my on-site camera operators.
Content Times:
0:19 Are you wearing your helmet?
0:53 Riding my bike off the dock into the lake. :)
2:15 The helmet falls off
2:40 Newton’s 2nd Law
4:08 Impulse approximation
5:01 Which variables are NOT dependent on helmet status
6:23 Impulse
7:01 What variables does wearing a helmet change
7:57 This one time I was riding my bike …
8:50 A contrasting story
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Rearranging Newton’s Second Law to derive the force of impact equation. Want lecture notes? This is an AP Physics 1 Topic.
Content Times:
0:09 Newton’s Second Law
1:57 The Force of Impact equation
2:33 The paradigm shift
Next Video: Calculatin...g the Force of Impact when Stepping off a Wall
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A 73 kg mr.p steps off a 73.2 cm high wall. If mr.p bends his knees such that he stops his downward motion and the time during the collision is 0.28 seconds, what is the force of impact caused by the ground on mr.p? Want lecture notes? This is an AP ...Physics 1 Topic.
Content Times:
0:21 Translating the problem
1:32 Splitting the problem into parts
3:07 Substituting in known variables
4:30 Finding the final velocity for part 1
6:21 Substituting back into Force of Impact equation
7:23 Converting to pounds
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Instantaneous Power Delivered by a Car Engine - Example Problem
Please support me on Patreon![more]

this video is an explanation of what velocity time graphs and distance time graphs are and how to interpret them. Thanks to Talal for help in making this video.

An example of conservation of momentum in two dimensions is finished in this segment. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' In...structor uses different colors for clarification. (09:32)[more]

This video takes you to a speedway in New York. It explains the weight of the car and the impact the car creates during a wreck. The video shows you the wall around the track, made of foam, that increases the impact time during a wreck. The narrato...r also mentions mass, velocity, impulse, and change in momentum. Run time 04:20.[more]

What momentum is and a simple problem involving momentum. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colo...rs for clarification. (09:18)[more]

Super-science! Dr. Jim Kakalios proves how Spider-Man's girlfriend Gwen Stacy died and shows that characters and their actions can be used to show students how science can be brought to prove or disprove some of their actions.

From pbslearningmedia.org, produced by Wake Forest University, Department of Physics

In this interactive activity adapted from Wake Forest University, learn about the principle of conservation of momentum. Two carts colliding on an air track demonstrate how momentum is conserved in a closed system. Observe six different scenarios—a m...oving cart colliding with a stationary cart of lesser, equal, or greater mass in both elastic and inelastic collisions—to see how the motion of the carts changes after each collision.[more]

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