Question

A bullet 10.1g leaves the barrel of a rifle with a speed of 504m/s. If the length of the barrel is 52.2cm determine the average force that accelerate the bullet.

Answer 1

The average force is

$$F=ma=m\frac{v^2}{2d}=0.0101·\frac{504^2}{2·0.522}=2457\text{ N}.$$