Two particles, 1 and 2, move with constant velocities `v_1` and `v_2` along two mutually perpendicul
Channel: Doubtnut
Date: 2020-08-16

Two particles, 1 and 2, move with constant velocities `v_1` and `v_2` along two mutually perpendicular straight lines toward the intersection point O. At the moment `t=0` the particles were located at the distances `l_1` and `l_2` from the point O. How soon will the distance between the particles become the smallest? What is it equal to?