Consider a situation in which a projectile is fired at 40 m/s from the top of a tower of height 36m in absence of air resistance at $t=0 sec.$ (g = 10 $m/s^2$)

	List-I		List-II
P)	Time at which particle moves at right angle with the initial direction	(1)	2.4 sec
Q)	Time at which kinetic energy is least	(2)	$\frac{20}{3} sec$
R)	Time at which it strikes the ground	(3)	5.6 sec
S)	Time when the $\overrightarrow{v}$  make ${45}^o$  with horizontal	(4)	6 sec