Question

A bullet of '4g' mass is fired from a gun of mass 4 kg. If the bullet moves with the muzzle speed of 50 ms^-1, the impulse imparted to the gun and velocity of recoil of gun are:

(1) 0.4 kg ms^-1, 0.1 ms^-1

(2) 0.2 kg ms^–1 , 0.05 ms^–1

(3) 0.2 kg ms^–1 , 0.1 ms^–1

(4) 0.4 kg ms^–1 , 0.05 ms^–1

Answer 1

Correct option is (2) 0.2 kg ms^-1, 0.05 ms^-1

By momentum conservation