In a ballistics test, a 25 g bullet traveling horizontally at 1200 m/s goes through a 35-cm-thick 350 kg stationary target and emerges with a speed of 750 m/s. The target is free to slide on a smooth horizontal surface.
(a) How long is the bullet in the target?
s
(b) What average force does it exert on the target?
N (magnitude only)
(c) What is the target's speed just after the bullet emerges?
m/s