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COR uu. A hockey ball of mass 200 g hits on a hockey stick with a velocity10 m/s. Calculate the change in momentum if the ball bounces back onthe same path with the same speed.m/s. Its |
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Answer» tion:Givenmass of the BALL =200g=0.2kgu= initial velocity of the ball before collision with the stick=10m/sv=final velocity of the ball after collision with the stick= -10m/s(because after HITTING the stick the ball reboundced back with same speed but opposite in direction)∆P=P2-P1 =mv2-mv1 =m(v2-v1) =0.2(-10-10) =0.2(-20) =-4kg/ms^-1 NEGATIVE sign just represents the opposite direction of the ball RELATIVE to motion of the ball before the collision |
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