Question

A bullet mass 20 g is horizontally fired with a velocity 150 m s -1 from a pistol of mass 2 kg. What is the recoil velocity of the pistol. ​

Answer 1

Answer:

Initial momentum of the system is 0 as it is at rest.

After firing-

MV=mv 

⟹V=Mmv=20.02×150

⟹V=1.5m/s

Answer 2

Answer:

The recoil velocity of the pistol is 1.5 m/s