Q.
A body of mass 5 kg moving with a velocity 10 m/s collides with another body of the mass 20 kg at rest and comes to rest. The velocity of the second body due to collision is
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a
2.5 m/s
b
5 m/s
c
7.5 m/s
d
10 m/s
answer is A.
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Detailed Solution
Momentum conservation5×10+20×0=5×0+20×v⇒v=2.5 m/s
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