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Kinetic energy potential energy to play tennis

Invincible baby A2010-02-16 01:11:11 +0000 #1
Emergency呀? ? ? ? ? ? ? ? You my dear friend helped me quickly find answers
Spiced small Peas2010-02-16 01:22:42 +0000 #2
Athletes jump up when the gravitational potential energy increase of

throw the ball, the ball up when the gravitational potential energy increase

racket hit the ball to the ball elastic potential energy

and then the ball will be elastic potential energy into kinetic energy of forward flight
NDSPOLICE2010-02-16 01:18:47 +0000 #3
the tennis racket to play out the moment the ball elastic potential energy, will hit the ball out, the elastic potential energy converted to kinetic energy.

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