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NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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A body of mass 50 kg is projected vertically upwards with velocity of 100 m/sec. 5 seconds after this body breaks into 20 kg and 30 kg. If 20 kg piece travels upwards with 150 m/sec, then the velocity of the block will be

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Correct option: A

15 m/sec downwards

Option A (15 m/sec downwards) is correct because momentum is conserved. Using the conservation of momentum equation, we can find the velocity of the 30 kg piece after the break.

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