Problem one- a 60.1-kg man steps off a 1.35-m high bench and lands with his knees and ankles locked. The only cushion for his fall is the 0.58-cm give in the pads of his shoes. Calculate the average force exerted upon his body by the ground as he abruptly stops.

problem 2- In April 1976 King cavemen hit a home run and cleared and hit a house located 530 feet(162m) from home plate. Suppose that the 0.144 kg baseball left cavemen's bat at 50.8 m/s and that it lost 10.7% of its orginal energy by the time it cleared the stadium wall at a height of 17.7 m above the height at which the bat contacted the ball. Determine the speed of the ball as it passed above the ball