2016.08.23: "This. is. BRILLIANT ... (and physics is awesome.) " Shaun Struwig - YouTube Comment
My Most Recent Video (2016.08.25)
Calculating the Force of Impact when Stepping off a Wall (7:59)
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? This is an AP Physics 1 Topic.
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
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