A bullet comes out of a gun with a velocity of 600 m/s. At what height from the target should the gun be aimed in order to hit the target situated at a distance of 200 m from the gun?

Time taken in travelling horizontal distance of 200m with constant velocity of 600 m/s is equal to 200/600=1/3 sec. Vertical distance moved under acceleration due to gravity, with zero initial velocity will be S=ut+12 at 2=0+12×10×(1/3)2=0.55 m . Hence the bullet should be aimed 0.55 m higher than target.