Physics Question ?!?

A 72 kg man jumps from a window 1.7 m above a sidewalk. The acceleration of gravity is 9.81 m/s 2 . a) What is his speed just before his feet strike the pavement? Answer in units of m/s. b) If the man jumps with his knees and ankles locked, the only cushion for his fall is approximately 0.41 cm in the pads of his... show more A 72 kg man jumps from a window 1.7 m
above a sidewalk.
The acceleration of gravity is 9.81 m/s
2
.
a) What is his speed just before his feet
strike the pavement?
Answer in units of m/s.

b) If the man jumps with his knees and ankles
locked, the only cushion for his fall is
approximately 0.41 cm in the pads of his feet.
Calculate the magnitude of the average
force exerted on him by the ground in this
situation.
Answer in units of N.
1 answer 1