Physics MCQ: A body of mass m moving with velocity 4 km/h collides with a body of mass 3 m at rest. Now the coalesced mass starts to move with a velocity of ?

A body of mass m moving with velocity 4 km/h collides with a body of mass 3 m at rest. Now the coalesced mass starts to move with a velocity of ?

Correct Answer: 1 km/h

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