Question

Two particles A and B, move with constant
-velocities V1 and V2. At the initial moment their
position vectors are r1 and r2 respectively. The
condition for particles A and B for their collision is
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Answer 1

Answer:

here is your answer aakashian.

Answer 2

Explanation:

for two particles to collide the direction of the relative velocity of one with respect to other should be directed towards the relative position to of the Other particle

now see in the attachment