A 28-g bullet strikes and becomes embedded in a 1.35-kg block of wood placed on a horizontal surface just in front of the gun. The coefficient of kinetic friction between the block and the surface is 0.28, and the impact drives the block a distance of 8.5 m before it comes to rest. (a) Show how to determine the muzzle speed of the bullet. (b) Show how much energy was 'lost' as the bullet imbedded in the block. (c) Show how much energy was 'lost' as the block slid across the surface.
