MEDAL GIVEN TO CORRECT ANSWER.
If you wear kneepads when skating, after a fall to your knees it will take 3 times as long for them to come to rest. How does this affect the force applied to your knees when you fall?

A. The force decreases by a factor of 9.
B. The force increases by a factor of 3.
C. The force decreases by a factor of 3.
D. The force does not change.

Question

MEDAL GIVEN TO CORRECT ANSWER. 
If you wear kneepads when skating, after a fall to your knees it will take 3 times as long for them to come to rest. How does this affect the force applied to your knees when you fall?

 		A.	The force decreases by a factor of 9.
 		B.	The force increases by a factor of 3.
 		C.	The force decreases by a factor of 3.
 		D.	The force does not change.

anonymous · Answer

F=Ma, your acelleration is 3 times less, so along with the force. Choice C