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A nucleus moving with velocity bar(v) em...

A nucleus moving with velocity `bar(v)` emits an `alpha`-particle. Let the velocities of the `alpha`-particle and the remaining nucleus be `bar(v)_(1)` and `bar(v)_(2)` and their masses be `m_(1)` and `(m_2)` then,

A

all velocity vectors `vec(v) , vec(v)_1 and vec(v)_2` must be parallel

B

`vec(v)` must be parallel to `(vec(v)_1 +vec(v)_2)`

C

`vec(v)` must be parallel to `(m_1vec(v)_1 +m_2vec(v)_2)`

D

none of above

Text Solution

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The correct Answer is:
C
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