Kinetic energy of a body of mass $1 k g$ moving with a uniform velocity of $10 m s^{- 1}$ is:

10 J

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100 J

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5 J

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50 J

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Solution

The correct option is D $50 J$
Given, $m = 1 k g, v = 10 m s^{- 1}$
$∴ K = \frac{1}{2} m v^{2} = \frac{1}{2} \times 1 \times 10^{2} = 50 J$

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Kinetic energy of a body of mass 1kg moving with a uniform velocity of 10ms−1 is:

The correct option is D 50JGiven, m=1kg,v=10ms−1∴K=12mv2=12×1×102=50J

Kinetic energy of a body of mass $1 k g$ moving with a uniform velocity of $10 m s^{- 1}$ is:

The correct option is D $50 J$
Given, $m = 1 k g, v = 10 m s^{- 1}$
$∴ K = \frac{1}{2} m v^{2} = \frac{1}{2} \times 1 \times 10^{2} = 50 J$