A 63 kg student free falls (don\'t ask why) from rest. Duringthe collision with

Question

A 63 kg student free falls (don't ask why) from rest. Duringthe collision with the ground, he comes to rest in .01 s Forceexerted on him by the ground is 18000 N. From what height did hefall? I think I know what to do but I need some help starting theproblem. A 63 kg student free falls (don't ask why) from rest. Duringthe collision with the ground, he comes to rest in .01 s Forceexerted on him by the ground is 18000 N. From what height did hefall? I think I know what to do but I need some help starting theproblem.

Explanation / Answer

we know that :             Height H = u2 / 2g Here   u = (F * t ) / m                H = ( F2 * t2) / 2g * m2                        = [ (180002 * 0.012 ) / 2* 9.8 *632 ]                         = 0.42 m Hope this helps u!                        = [ (180002 * 0.012 ) / 2* 9.8 *632 ]                         = 0.42 m Hope this helps u!

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