Question

A boy aims a gun at a bird from a point at a
horizontal distance of 100 m . If the gun can
impart a velocity of 500 m/sec to the bullet, at
what height above the bird must he aim his gun
in order to hit it (g = 10 m/sec)
​

Answer 1

Range=u^2×sin2A/g

u=500m/s

g=9.8m/s^2

100×9.8=500^2×sin2A

sin2A=980/250000

2A=sin^-1(980/250000)