A bag (mass M) hangs by a long thred and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined (bag+bullet) system -

Options

A. Momentum is `mMv/(M + m)`
B. KE is `(1//2)Mv^(2)`
C. Momentum is mv
D. KE is `m^(2)v^(2)//(M+m)`

Answer

C