The kinetic energy of a body of mass 4 kg and having momentum of 6 kg-m/s will be

4.5 J

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2.5 J

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5.5 J

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3.5 J

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Solution

The correct option is A
4.5 J

$K = \frac{p^{2}}{2 m} = \frac{36}{8} = 4.5 J$

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