[SOLVED] Conservation of Momentum problem 1. The problem statement, all variables and given/known data A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 54.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -x direction.) (a) What is the impulse delivered to the ball by the racquet? (b) What work does the racquet do on the ball? 3. The attempt at a solution I got part A by finding the change in initial and final momentum of the ball (5.28). I thought I could get part B by: mv = 5.28 so v = 88 m/s; and plug that into .5mv^2 to find the energy. That was wrong though and now I am not sure how to solve it.