# Two particles are seperates by a horizontal distance X and are launched with velocity U√3 at an angle of 30° and another with velocity U at an angle of 60° find the time after which the horizontal distance between them is  0

Horizontal component of velocity of first particle=
Horizontal component of velocity of first particle=
Therefore the velocity of the two particles relative to one another is
Hence the time in which the horizontal distance between them is zero is