Question

A particle P is projected with velocity u1 at an angle of 30o
with
the horizontal. Another particle Q is thrown vertically upwards
with velocity u2 from a point vertically below the highest point of
path of P. Show that the necessary condition for the two particles
to collide at the highest point is u1 = 2u2.

Answer 1

hope u get the solution.
pls mark as brainliest

Answer 2

sorry I don't know.