Tennis Racket Dynamics: Impacts, Forces & Weight

AI Thread Summary
The discussion focuses on the dynamics of a tennis racket and ball during impact, specifically analyzing the motion and forces involved. The player swings a 1000g racket at 8m/s, hitting a 60g ball moving at 18m/s, which rebounds at 38m/s. Participants debate the appropriateness of using the momentum conservation equation m1v1 = m2v2 for calculating the racket's speed after impact. There is uncertainty about whether this equation accurately represents the collision dynamics. The conversation emphasizes the need for clarity on the physics principles governing the interaction between the racket and ball.
aligass2004
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Homework Statement


A tennis player swings her 1000g racket with a speed of 8m/s. She hits a 60g tennis ball that was approaching her at a speed of 18m/s. The ball rebounds at 38 m/s.
a.) How fast is her racket moving immediately after the impact? You can ignore the interaction of the racket with her hand for the brief duration of the collision.
b.) If the tennis ball and racket are in contact for 10ms, what is the average force that the racket exerts on the ball?
c.) How does this compare to the ball's weight?


Homework Equations





The Attempt at a Solution



I tried using m1v1 = m2v2 for part a, but I don't think it's right to use that equation in the first place.
 
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aligass2004 said:
I tried using m1v1 = m2v2 for part a, but I don't think it's right to use that equation in the first place.
Why don't you think that its the correct equation to use?
 
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