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Two ball A and B having masses 1kg and 2...

Two ball `A` and `B` having masses 1kg and 2kg, moving with speeds `21m//s` amd `4m//s` receptively in opposite direction, collide head on. After collision `A` moves with a speed of `1m//s` in the same direction, then correct statements is:

A

`0.1`

B

`0.2`

C

`0.4`

D

none

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The correct Answer is:
B
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