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Kinematics
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If momentum of a body is increased by 100%, then the percentage increase in kinetic energy is
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A
300%
💡 Explanation:
If P is the momentum, then its kinetic energy is K = p2/2m. Initial momentum is P1 = 100, then final momentum is P2 = 200. Now K2/K1 = P22/P12 = 40000/10000 = 4. That means Kinetic energy increases by 300%. The correct answer is (4)