Physics

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A 50g tennis ball is thrown with a velocity of 12 m/s. It strikes a wall and rebounds with a velocity of 10 m/s.

a) What is the ball's initial and final momentum?
b) what is the impulse on the ball?
c) Thje ball is in contact with the wall for .10 second. with what force did the ball hit the wall?

Please show all work!

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