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[SOLVED] Conservation of Momentum problem
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?
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.
Homework Statement
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?
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.