Question

A bullet of mass 100gm is fired from a gun of mass 20 kg witha velocity of 100m/s . Calculate the velocityof recoil of the gun​

Answer 1

The answer is in attached photo.

Answer 2

Answer:

A bullet of mass 100 gm is fired from a gun of mass 20 kg with a velocity of 100 m/s,

As per the law of conservation of momentum

m1v1 = m2v2

$0.1 \times 100 = 20 \times v \\ \\ v = \frac{10}{20} = 0.5 \: \frac{m}{s}$