Respuesta :

F=?

M= 2.1 kg

A= 30 m/s

F= M*A

F= 63

AL2006

You haven't asked any question about this situation, so we have to guess.  Perhaps the question is: Why are you playing the game with a ball that weighs more than 4.6 pounds, and how can you protect your hand when it's your serve ?

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