Question

A 75-g tennis ball moving to the right at 46 m/s is hit by a tennis racquet. Immediately afterward, the ball travels
to the left at 33 m/s. Choose the +x-direction to be to the right throughout this problem.

a) What is the impulse that the ball receives from the racquet?-------

b) If the ball is in contact with the racquet for a total of 13 ms, what is the average force
that the racquet exerts on the ball? -------

Answer 1

c) If the mass of the player's racquet-and-arm together is 3.4 kg, and the racquet+arm's velocity immediately
before impact is 8.5 m/s to the left, what is the racquet/arm's final velocity after impact? ------(
Assume that the rest of the player's body does not participate in the collision.)

d) Let the ball and racquet+arm comprise a two-body system. What is the velocity of the center-of-mass
of the system immediately before impact?-------

Answer 2

e) After impact, the velocity of the center-of-mass of the system will be ...
A. faster B. slower C. unchanged

Answer 3

What have you come up with?
Show us what you've already done.