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Question

A heavy and a light body have equal momentum. Which of the following has greater kinetic energy?

A
Can't determine
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B
Both have same kinetic energy
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C
Light body
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D
Heavy body
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Solution

The correct option is C Light body
Given that the momentum is same for both the bodies.
Also, kinetic energy = p22m
K.E1m (since, momentum is same for both)
K.E. will be more for the lighter body as it has lesser mass.

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