The kinetic energy of a body is numerically equal to thrice the momentum of body. The velocity of the body is:

2 m/s

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3 m/s

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6 m/s

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9 m/s

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Solution

The correct option is C 6 m/s
Given that $K . E = 3 p$
So $\frac{m v^{2}}{2} = 3 m v$
$v = 6 m / s$

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A body of mass 10 kg is moving with velocity 4 $m s^{- 1}$ . The kinetic energy and momentum of the body is:

50

v_{1}

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