Question

If you wear kneepads when skating, after a fall to your knees it will take 3 times as long for them to come to a rest. How does this affect the change in momentum of your knees during the fall?
A. The change in momentum is the same with or without the kneepads
B. The change in momentum decreases by a factor of 9
C. The change in momentum decreases by a factor of 3
D. The change in momentum increases by a factor of 3