Question

A ball moving at a constant speed 10m/s, hits normally on a wall (mass of ball is 50g) and rebounds with same speed. The change in momentum is

Answer 1

Change in momentum

= Final momentum - Initial Momentum

= M1V1 - M1U1

The ball rebounds with the same velocity

Final momentum = M1V1 = 50×10 = 500g m/s

Initial momentum = M1U1 = 50×10 = 500g m/s

Therefore, change in momentum = 500-500 = 0g m/s

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