When a ball hits a wall with a velocity of 50 m\s and bounces back with the same speed, what is the change in velocity of the ball?
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Answer:
-50 only the direction of ball changes
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Answer:
The change in the velocity is same as change in momentum as the mass of the ball remains the same .
So change in momentum is
MV-(-MV) as the second time the momentum is same but in the opposite direction ..and hence the change in the velocity will be 100m/sec
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