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Two particles A and B, move with constan...

Two particles A and B, move with constant velocities `vec(v_(1))" and "vec(v_(2))`. At the initial moment their position vectors are `vec(r_(1))" and "vec(r_(2))` respectively. The condition for particle A and B for their collision is

A

`vecr_(1)-vecr_(2)=vecv_(1)-vecv_(2)`

B

`(vecr_(1)-vecr_(2))/(|vecr_(1)-vecr_(2)|)=(vecv_(2)-vecv_(1))/(|vecv_(2)-vecv_(1)|)`

C

`vecr_(1),vecv_(1)=vecr_(2).vecv_(2)`

D

`vecr_(1)xxvecv_(1)=vecr_(2)xxvecv_(2)`

Text Solution

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The correct Answer is:
B
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