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, the velocity of the system must be

Options

A. `(AB)/(A+C)`
B. `(A+C)/(B+C)`
C. `(AC)/(B+C)`
D. `(A+B)/(AC)`

Answer

A

Explanation

Momentum is conserved.
`:.AB=(A+C)V`,where V is velocity of combination.
or `V=(AB)/(A+C)`