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Two identiacal balls A and B having ve...

Two identiacal balls A and B having velocities of 0.5 m/s and `0.3" m"//"s"` respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

A

`-0.5m//s and 0.3m//s`

B

`0.5m//s and -0.3m//s`

C

`-0.3m//s and -0.5m//g`

D

`0.3m//s and 0.5m//s`

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The correct Answer is:
B
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