A student (m=63 kg) falls freely from restand strikes the ground. During the collision with the ground, hecomes to rest in a time of 0.010 s. The average force exertedon him by the ground is +18,000 N, where the upward direction istaken to be the positive direction. From what height did thestudent fall? Assume that the only force acting on him during thecollision is that due to the ground.