Physics

Problem

A gun of mass

4\,\text{kg}

fires a bullet of mass

20\,\text{g}

with a muzzle velocity of

400\,\text{m/s}

. What is the magnitude and direction of the recoil velocity of the gun? a)

0.2\,\text{m/s backward}

4\,\text{m/s backward}

2\,\text{m/s backward}

2\,\text{m/s forward}