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A ball of mass 0.2kg is thrown normally against a wall with a speed of 20ms!It rebounds normally with a speed of 15 ms, then impulse by the ball on the wall is

Answer» <p>Impulse=change in momentumP2-p1=mv-(-mu)=0.2*20+0.2*15=4+3=7</p> <p>7 is the right answer</p> <p>7 is the right answer</p>


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