Question

5. A bullet of mass 10 g is fired from a gun of mass 1 kg. What will be the velocity of the bullet in m/s , if the recoil velocity is 1 m/s ?
(a) 100
(b) 10
(c) I
(d) 20​

Answer 1

Answer:

(a) 100 m/s.

Explanation:

Momentum (mass * velocity) is conserved.

Moment of bullet = 0.010 * V

Recoil momentum of the gun =  1*1 = 1.

0.010V = 1

V = 1 / 0.01

= 100 m/s.