Atennis player swings her 1000 g racket with a speed of 15.0 m/s. she hits a 60 g tennis ball that was approaching her at a speed of 18.0 m/s. the ball rebounds at 40.0 m/s. 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.
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if the tennis ball and racket are in contact for 7.00 , what is the average force that the racket exerts on the ball?

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?