A loaded spring gun of mass M fires a bullet of mass m with a velocity v at an angle of elevation `theta`. The gun is initially at rest on a horizontal smooth surface. After firing, the centre of mass of the gun and bullet system

Options

A. Moves with a velocity `(v(M-m))/(M+m)` in the horizontal direction
B. Moves with velocity `(mv cos theta)/((M+m))`
C. Moves with a velocity `v((m)/(M+m))`
D. Moves with a velocity `((mv sintheta)/(M+m))`

Answer

D