A golf ball with mass $m$ is released from rest and falls onto a hard surface from height $h_1$, then bounces up to height $h_2$. The momentum of the golf ball immediately before it hits the surface is not the same as its momentum immediately after it leaves the surface. What is the total change in momentum of the golf ball during the interval between these two moments? (Ignore air resistance.)
- A$m\sqrt{2gh_1} - m\sqrt{2gh_2}$
- B$m\sqrt{2gh_1} + m\sqrt{2gh_2}$
- C$m\sqrt{2g(h_1 - h_2)}$
- D$m\sqrt{2g(h_1 + h_2)}$