A 3.25-kg crate starting at rest slides down a rough 7.00-m-long ramp, inclined at 27.5° below the horizontal. The magnitude of the force of friction between the crate and the ramp is 9.00 N. (a) How much work is done on the crate by friction? (b) What is the change in potential energy of the crate in sliding down the ramp? (c) What is the speed of the crate at the bottom of the incline? m/s Need Help? Read It

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