Center Of Mass

A bullet of \(10 \mathrm{~g}\) leaves the barrel of gun with a velocity of \(600 \mathrm{~m} / \mathrm{s}\). If the barrel of gun is \(50 \mathrm{~cm}\) long and mass of gun is \(3 \mathrm{~kg}\), then value of impulse supplied to the gun will be :