A body of mass 5 kg is moving with a velocity of 10 m s^-1. The ratio of its initial kinetic energy and final kinetic energy, if the mass of the body is doubled and its velocity is halved will be

1:1

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1:2

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2:1

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2:3

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Solution

The correct option is C
2:1

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A body of mass 10 kg is moving with a velocity 20 m $s^{- 1}$ . If the mass of the body is doubled and its velocity is halved, find:(i) the initial kinetic energy, and (ii) the final kinetic energy.

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A body of mass 5 kg is moving with a velocity of 10 m s-1. The ratio of its initial kinetic energy and final kinetic energy, if the mass of the body is doubled and its velocity is halved will be

The correct option is C 2:1

A body of mass 5 kg is moving with a velocity of 10 m s^-1. The ratio of its initial kinetic energy and final kinetic energy, if the mass of the body is doubled and its velocity is halved will be

The correct option is C
2:1