Question

A 15g bullet fired from a gun of 3kg leaves with a speed of 400m/s.Find the velocity with which the gun recoil​

Answer 1

ANSWER

MB =15g

M gun =3kg

Ref. image

Since no Extra force fext

=0

Momentum is conserved.

MgUg=M

B

UB3×U

g=15×10 −3×300

Ug =1.5m/s