1. The problem statement, all variables and given/known data In a ballistics test, a 25.0 bullet traveling horizontally at 1100 goes through a 20.0 -thick 450 stationary target and emerges with a speed of 800 . The target is free to slide on a smooth horizontal surface. a.How long is the bullet in the target? b. What average force does the bullet exert on the target? c. What is the target's speed just after the bullet emerges? 2. Relevant equations p=mv impulse= F*change in time F=ma 3. The attempt at a solution I have no idea how to do part a. I used the impulse equation for b but got the wrong answer. For c, I think I use the impulse equation and then calculate vf from the kinetics equation?