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Calculating the Force of Impact when Stepping off a Wall

Flipping Physics
By Flipping Physics, 08/25/2016
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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

Next Video: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall

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