Momentum Conservation in Ball-Earth System · CAP 2009 #1
Physics · mechanics
Problem
A ball falls to the earth from a height h and bounces to a height h′. Momentum is conserved in the ball-earth system:
(a) no matter what height h′ the ball reaches.
(b) only if h′ < h.
(c) only if h′ = h.
(d) only if h′ > h.
(e) only if h′ ≥ h.