physics

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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.
m/s
(b) Determine the coefficient of kinetic friction between block and floor.

(c) Determine the mechanical energy lost due to friction.
J

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