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A particle of mass m moving eastward wit...

A particle of mass `m` moving eastward with a speed `v` collides with another particle of the same mass moving northward coalesce on collision. The new particle of mass `2 m` will move in the north - easterly direction with a velocity

A

v/2

B

2v

C

`v//sqrt(2)`

D

v

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The correct Answer is:
C
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