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A body of mass m, moving with a uniform velocity of `30 m s^(-1)` collides with another body of mass m2 at rest and then the two together begin to move with a uniform velocity of `20 m s^(-1)`. The ratio of their masses `((m_1)/(m_2))` is

A

0.75

B

0.25

C

4

D

2

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Verified by Experts

The correct Answer is:
D
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