Question

from a rifle of moss 4kg a bullet of mass 50g is fired with an inited velocity of 35ms-1 calulate the initial recoil velocity of the rifle.​

Answer 1

Answer:

0.4125 meter/sec

Explanation:

The principle behind this question is conservation of momentum.

(mass of bullet)*(velocity of bullet)=(mass of gun)*(recoil velocity of the gun)-(1)

There are no external forces acting on this system. Therefore, there is no change in momentum. That is why the above equation is valid.

Substituting values in (1):

(0.05)*(35)=4*v

Therefore, v=0.4125 meter/sec

I hope this answer helps you.