A bullet of mass `m` moving with velocity `v` strikes a block of mass `M` at rest and gets embedded into it. The kinetic energy of the composite block will be

Options

A. `(1)/(2)mv^(2)xx(m)/((m+M))`
B. `(1)/(2)mv^(2)xx(M)/((m+M))`
C. `(1)/(2)mv^(2)xx((M+m))/(M)`
D. `(1)/(2)Mv^(2)xx(m)/((m+M))`

Answer

A