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A 165 lb student lands from a vertical jump and immediately jumps vertically again. The average...

A 165 lb student lands from a vertical jump and immediately jumps vertically again. The average ground reaction force is 1735 N which is applied for 0.33s. He was moving 1.2 m/s downwards when he first contacted the ground. What will his velocity be at takeoff? What will be his jump height?

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