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, what is the end velocity of the system?
1
\(\frac{{\left( {AB} \right)}}{{\left( {A + C} \right)}}\)
2
\(\frac{{\left( {AC} \right)}}{{\left( {B + C} \right)}}\)
3
\(\frac{{\left( {A + C} \right)}}{{\left( {BC} \right)}}\)
4
\(\frac{{\left( {A + B} \right)}}{{AC}}\)