Problem: A student ( having a mass of 49 kg) falls freely from rest and strikes the ground. He comes to rest in a time of 0.387 s during the collision on the ground. The average force exerted on him by the ground is +31243 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 the student during the collision is due to the ground for this problem. O H= 3110 m O H= 1.88e-8 m O H= 7.98e11 m O H= 2.98e5 m O H= 1.24e4 m

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A:

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