A bullet of mass m travelling horizontally with speed u strikes a wooden block of mass 'M' placed on a smooth horizontal plane. The penetration is assumed uniform and the bullet comes to rest after penetrating a distance 'd' into the block. Then choose the correct statement :

Options

A. Ultimately the total loss of kinetic energy is `(mMu^(2))/(2(M+m))`
B. The value of the resistance force (assumed constant) offered by the wood is F = `(mMu^(2))/(2d(M+m))`
C. The distance covered by the bullet w.r.t. the ground before it comes to rest w.r.t. block is `(dm)/(M+m)`
D. The block moves greater distance than the bullet wrt ground.

Answer

A, B