A 60-kg woman jumps off a wall 80 cm high and lands on a concrete road with
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A 60-kg woman jumps off a wall 80 cm high and lands on a concrete road with her knees stiff. Her body is compressed by 8 cm at the moment of impact.
(a) What was the average force the road exerted on her body?
(b) If the woman bent her knees on impact so that she came to a stop over a distance of 40 cm, what would the average force on her body be?
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