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Answer on Mechanics | Relativity Question for john

Question #52854
A 4kg ball having velocity (7i+6j) m/s collides and bounces off a wall with a velocity of (-3i+6j) m/s. The ball is in contact with the wall for 0.01 s.In unit-vector notation, what are a) the impulse and b)the average force on the ball from the wall
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