A child of mass 40kg jumps off a wall and hits the ground at 4m/s.He bends his knees and stops in 1s.Calculate the force required to slow him down.How would this force be d/t if he didn't bend his knees and stopped in 0.1s?

Answer 1

KE = Ft
Solve for F

Answer 2

This physics

Answer 3

answer

Answer 4

160N

Answer 5

16N