Question

A bullet of mass 20 gram is fired from a gun of mass 2.5 kg with a speed of 750 m/s. The magnitude of recoil velocity of the gun is ______.

Options

• 6 m/s

• 18 m/s

• 12 m/s

• 3 m/s

Answer 1

A bullet of mass 20 gram is fired from a gun of mass 2.5 kg with a speed of 750 m/s. The magnitude of recoil velocity of the gun is 6 m/s.

Explanation:

mv = Mv

`"v"="mv"/"M"=(20xx10^-3xx750)/2.5=6  "m/s"`