A revolver of mass fires a bullet with a speed of relative to the ground

PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A revolver of mass

2.5\,\text{kg}

fires a

8.0\,\text{g}

bullet with a speed of

400\,\text{m\,s}^{-1}

relative to the ground. Calculate the recoil speed of the revolver immediately after firing.