In a ballistics test, a bullet of 23.0 g traveling horizontally at 1300 m/s goes via a 40.0 cm-thick stationary target of 450 kg and emerges with the speed of 900 m/s. The target is free to slide on the smooth horizontal surface.
i) Determine how long is the bullet in the target?
ii) Determine what average force does the bullet apply on the target?
iii) Determine the speed of target just after the bullet emerges?