Yes they collideClassical Mechanics Level 3
A boy projects a ball vertically upwards with speed 10 m/s from a point \(x\), which is 50 m above the ground. \(t\) seconds after the first ball is projected upwards, the boy drops second ball from \(x\). Initially the second ball is at rest. The balls collide 25 m above the ground.
Find the value of \(t\) in seconds.