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On a friction surface a block a mass M m...

On a friction surface a block a mass `M` moving at speed `v` collides elastic with another block of same mass `M` which is initially at rest . After collision the first block moves at an angle `theta` to its initial direction and has a speed `(v)/(3)`. The second block's speed after the collision is

A

`(sqrt3)/(2)v`

B

`(2sqrt2)/(3)v`

C

`(3)/(4)v`

D

`(3)/(sqrt2)v`

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The correct Answer is:
B
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