Question

A rifle is aimed horizontally toward the center of a target 50 m away. The velocity of the bullet is 200 m/s. How far below the target center the bullet strikes? (Ignore air friction.)

Answer 1

How long does it take it to get there?
50 meters = 200 meters/s * t
t = 1/4 second
How far does it fall in 1/4 second?
(1/2) g t^2 = (1/2) (9.81 m/s^2) (1/16 s^2)
= 0.306 meters or about 30 centimeters
Better adjust your rifle sight for this.