A bullet of mass `50 g` is fired by a gun of mass `5 kg` .If the muzzle speed of the bullet is`200 ms^(-1)`, what is the recoil speed of the gun?

Explanation

Use momentum conservation : `100 v = 0.02 xx 80`
` v = 0.016 ms^(-1) = 1.6 cm s^(-1)`