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A football punter accelerates a football from rest to a speed of 10.0 m/s during the...

A football punter accelerates a football from rest to a speed of 10.0 m/s during the time in which his foot is in contact with the ball (about 0.20 s).
a) If the football has a mass of 0.42 kg, what average force does the punter exert on the ball?
b) If the punter’s mass is 80.0 kg, what average force is exerted on his foot?
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