A particle is projected vertically upwards from a point A on the ground. It takes time t1 to reach a point B, but it still continues to move up. If it takes further t2 time to reach the ground from point B, then height of point B from the ground is :
If after t1 and t2 sec, it is at the same height, then time of flight
At t1, displacement ‘h’
Substituting value of ‘U’