Two particles 'A' and 'B', move with constant velocities →v1 and →v2 respectively. At the initial moment, their position vectors are →r1 and →r2 respectively. The condition for particle 'A' and 'B' for their collision is

Two particles 'A' and 'B', move with constant velocities →v1 and →

1.	Two particles 'A' and 'B', move with constant velocities →v1 and →v2 respectively. At the initial moment, their position vectors are →r1 and →r2 respectively. The condition for particle 'A' and 'B' for their collision is
Answer» Two particles 'A' and 'B', move with constant velocities $_{1}$ and $_{2}$ respectively. At the initial moment, their position vectors are $_{1}$ and $_{2}$ respectively. The condition for particle 'A' and 'B' for their collision is

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Two particles 'A' and 'B', move with constant velocities →v1 and →v2 respectively. At the initial moment, their position vectors are →r1 and →r2 respectively. The condition for particle 'A' and 'B' for their collision is

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