A bullet of mass m is fired in horizontal direction with velocity u. This bullet embades in a sand bag of mass M. What will be the velocity of sand bag after collision?
(a) \(\frac{mu}{M + m}\)
(b) \(\frac{mu}{(M + m)u}\)
(c) \(\frac{mM}{(M + m)u}\)
(d) 0 (zero)
