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A body of mass 5 kg moving with a veloci...

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

A

2.5 m/s

B

5 m/s

C

7.5 m/s

D

10 m/s

Text Solution

Verified by Experts

The correct Answer is:
A
`m_1u_1+m_2u_2 = m_1v_1 +m_2v_2`
`implies 5 xx10 + 0 = 0+ 20xx v_2`
`v_2 = 2.5m//s`
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