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Two bodies of masses 0.1 kg and 0.4 kg m...

Two bodies of masses 0.1 kg and 0.4 kg move towards each other with the velocities 1 m/s and 0.1 m/s respectively, After collision they stick together. In 10 sec the combined mass travels

A

120 m

B

0.12 m

C

12 m

D

1.2 m

Text Solution

Verified by Experts

The correct Answer is:
D
Velocity of combined mass, `v = (m_(1)v_(1) - m_(2)v_(2))/(m_(1) + v_(2))`
`= (0.1 xx 1 - 0.4 xx 0.1)/(0.5) = 0.12 m//s`
`therefore` Distance travelled combined mass
`= v xx t = 0.12 xx 10 = 1.2 m`.
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