EAMCET Engineering 2009 Solved Paper

A bullet of mass 0.02‌kg travelling horizontally with velocity 250ms−1 strikes a block of wood of mass 0.23‌kg which rests on a rough horizontal surface. After the impact, the block and bullet move together and come to rest after travelling a distance of 40m. The coefficient of sliding friction of the rough surface is (g=9.8ms−2)