A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he?

Question

can u plzz help me out... i have to submit it in 1 hr pllzzz...

A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0110 s. The average force exerted on him by the ground is +17500. N, where the upward direction is taken to be the positive direction. From what height did the student fall? Assume that the only force acting on him during the collision is that due to the ground.

Answer 1

I don't have the answer, but there should be an equation in your text that relates the velocity of an object, it's mass, and the time for decelleration to determine the force of impact. Just re-arrange the equation to solve for velocity.