Question

Two particles are located on a horizontal plane at a distance of 60 both the particles are simultaneously projected at angle 45 degree towards each other in the same vertical plane with velocities to metres per second and 14 metres per second minimum separation between the particles is 1. 60
2. 30m
3.16m
4.36m

Answer 1

If two particles are projected at same speed at same vertical plane than

u sin30x11 = u sin60x12

t1/t2=1.732sec