# Physics

A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s.
1) 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?

Please show it step by step along with the equation to use

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1. impulse=changemomentum
force*1.5=.15*11
solve for force.

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bobpursley
2. I still don't get it. Can you plug the numbers in and tell me which equation to use

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3. force=.15*11/1.5=?

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bobpursley
4. Is this the equation: F=ma/?

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5. The answer I'm suppose to get is 7.55N
How do I get that?

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