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The velocity of a particle varies with t...

The velocity of a particle varies with time as per the law `vec(v)=vec(a) +vec(b)` t where `vec(a)` and `vec(b)` are two constant vectors. The time at which velocity of the particle at t=0 is :

A

`-(|vec(a)|)/(vec(a).vec(b))`

B

`-(|vec(a)|^(2))/(vec(a).vec(b))`

C

`-(vec(a).vec(b))/(|vec(a)|^(2))`

D

None of these

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The correct Answer is:
B
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