posted by Rob .
Starting from rest, a 10.7 kg block slides 2.60 m down to the bottom of a frictionless ramp inclined 30.0° from the floor. The block then slides an additional 4.70 m along the floor before coming to a stop.
(a) Determine the speed of the block at the bottom of the ramp.
(b) Determine the coefficient of kinetic friction between block and floor.
(c) Determine the mechanical energy lost due to friction.