A bullet of mass a and velocity b is fired into a large block of mass c. the final velocity of the system is
A bullet of mass A and velocity B is fired into a wooden block of mass C. If the bullet gets embedded in the wooden block, then the the magnitude of velocity of the system just after collision will be
(a)A+B/AC . (b)A+C/B+C . (c)AC/B+C . (d)AB/A+C