A body of mass 2 kg has momentum 10 kg m/s. Its kinetic energy is

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Kinetic energy K = p²/(2m) = (10)²/(2×2) = 100/4 = 25 J. Also, velocity v = p/m = 5 m/s, K = ½×2×5² = 25 J. Formula p²/(2m) is useful for quick computation. Always ensure units: kg, m/s, J.

A body of mass 2 kg has momentum 10 kg m/s. Its kinetic energy is MCQ with Answer and Explanation

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