15. A woman pushes a box (m ground is 20 N, while the kinetic friction is 7 N. How much force must the woman
exert to get the box moving? Which what force must she push the box in order to
get it to accelerate at 1.0 m/s2 to the west?

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.