The velocity of a body of mass 15 kg increases from 5 m/s to 10 m/s when a force acts on it for 2 s. What is the gain in momentum per second?

75 kg.m/s

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100kg.m/s

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50 kg.m/s

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150 kg.m/s

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Solution

The correct option is A
75 kg.m/s

Initial momentum = 15 × 5 = 75 kg.m/s

Final momentum = 15× 10 = 150 kg.m/s

Gain in momentum = 150 - 75 = 75 kg.m/s

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