A 25 gram bullet moving at 550 m/s strikes and imbeds itself in a 3.5-kg wooden block that is at rest on a level surface. The bullet imbeds itself into the block, and they start to slide at 3.9 m/s. The coefficient of kinetic friction between the block and floor is .25.
a.) How far does the block/bullet slide before it stops?
b.) How long does it take for the bullet to slide to a stop?