Question

A projectile is fired from the top of a tower 40m high with an initial speed of 50m/s at an unknown angle. Its speed when it hits the ground is

Answer 1

Here is your answer...
Given:- u=50m/s
s=40m
g=-10m/s2
so, v2= u2+2as
=2500-800
=1700
v=
$\sqrt{17} \times 10$