A 42.0 kilogram parachutist lands moving straight downward with a speed of 3.85 m/s.
a) If the parachutist comes to rest with constant acceleration over a distance of 0.750 meter, determine what force does the ground exert on her?
b) If the parachutist comes to rest over a shorter distance, is the force exerted by the ground greater than, less than. or the same as in part (a).