A bullet of mass 15 g is fired with an initial speed of 300 m/s into a wooden block that i...

A bullet of mass 15 g is fired with an initial speed of 300 m/s into a wooden block that is initially at rest. The bullet becomes lodged in the block, and the two slide together on the floor for a distance of 1.5 in before coming to rest (Fig. P7.57). If the coefficient of friction between the block and the floor is 0.40, what is the mass of the block?

Figure P7.57