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## Homework Statement

A rifle is held rigidly by a supporting test frame. When fired horizontallly, a 50 g bullet attains a muzzle exit velocity of 500 m/s if it takes 0.003 s for the bullet to travel the length of the barrel, determine the average horizontal force applied to the gun by the test frame during firing.

## Homework Equations

## The Attempt at a Solution

I know that the answer is 8.33 kN but I do not know how to solve it.

I think that we evaluate the forces on the x axis, there are no forces on the y axis but

i am not sure, any help?