Question

Three projectiles are fired with velocities u, u, and u, at
inclinations 0, 0, and e,, respectively, with the horizontal
such that the maximum heights attained by all of them are
same.
Maximum height
Horizontal range
(a) Which projectile will take maximum time to reach the
ground?
(b) Which projectile will possess the maximum speed on
reaching the ground?​

Answer 1

T=2usinθ/g

T=$\sqrt{2h/g}$

T∞√H

T1=T2=T3

v=sinθ

v3⊃v2⊃v1