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NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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A body is moving horizontally at a height of 9 m has its P.E = K.E. Then velocity of that body is

View answer and explanation

Correct option: B

13.5 m/s

Option B (13.5 m/s) is correct because when potential energy equals kinetic energy,

mgh = (1/2)mv^2

, so

v = \sqrt{2gh} = \sqrt{2 * 9.8 * 9} \approx 13.3 m/s

. The closest value is 13.5 m/s.

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