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Two point masses 1 and 2 move with unifo...

Two point masses 1 and 2 move with uniform velocities `vec(v)_(1)` and `vec(v)_(2)`, respectively. Their initial position vectors are `vec(r )_(1)` and `vec(r )_(2)`, respectively. Which of the following should be satisfied for the collision of the point masses?

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

Verified by Experts

The correct Answer is:
B
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