CRASHING SOFTLY
3
Consider the pole-vault jumper. Suppose he falls on a hard floor, you know what will happen? He falls on a foam bed that cushions and sags as he hit. On a hard floor, he will experience heavy force all of a sudden. It will cause him injuries. On a cushion floor, the time of force acting on him is elongated. Hence, the average force acting on him per secon...
