Physics;Help!!!!!!

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The question is in the first question marked physics beside Pamela.PLEASE ANSWER!!

  • Physics;Help!!!!!! -

    A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s. If the ball has mass 0.15 kg and the boy's arm moved through 1.5 m as he threw the ball, then what average force did he exert on the ball?

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