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Old 01-22-2013, 02:21 PM   #34
Join Date: Feb 2011
Posts: 6,257

I think the hand slows down because energy is transferred from the hand into the racket.
in the kinematic chain energy is alway transferred by decelerating the prior body part.

think cracking a whip: the handle is accelerated and then suddenly stopped which causes the whip to crack

Last edited by dominikk1985; 01-22-2013 at 02:23 PM.
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