Question

a tennis player swings her 1000g racket with a speed of 6.00 m/s. she hits a 60g tennis ball that was approaching her at a speed of 18.0 m/s . the ball rebounds at 43.0 m/s. a)how fast is her racket moving immediately after the impact? you can ignor 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 10.0 m, whAT IS THE AVEREGE force that the racket exerts on the ball?

Answer 1

a) Apply conservation of momentum to the ball-racket impact.

b) Your units for the contact time (meters) do not make sense. Did you mean milliseconds?

Anyway, use (ball's momentum change) = impulse
= force * time

Answer 2

6.4

Answer 3

1.the unit in which force is measured

2. It changes both the direction and the speed of the ball

3. the force will cause a change in the momentum of the object

4. The state of motion of an object with mass