question_answer

A bullet of mass A and velocity B is fired into a block of wood of mass C. If loss of any mass and friction be neglected, then velocity of the system must be

A)  \[\frac{AB}{A+C}\]          

B)         \[\frac{A+C}{B+C}\]

C)  \[\frac{AC}{B+C}\]         

D)         \[\frac{A+B}{AC}\]