A rifle with muzzle velocity of 460m\s shoot a bullet at small target 46 metre away. How high above the target must the gun be aimed so that the bullet will hit the target.

Answer 1

assuming the target is horizontal from the gun.

distance bullet falls:
h=1/2 g t^2 where the time is from
t=46/460 seconds

h=1/2 (9.8)(46/460)^2