Linear velocity
A bicycle wheel of radius 0.32 m rolls down a hill without slipping. Its linear velocity increases constantly from 0 to 5 m/s in 2.9 s. Through what angle does the wheel turn in the 2.9 s?
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A steel ball of mass 0.440 kg is fastened to a cord 57.0 cm long and fixed at the far end. It is released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.60 kg steel block initially at rest on a frictionless surface.
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A 1.29-kg block slides across a rough surface such that it slows down with an acceleration of 1.40 m/s2. What is the coefficient of kinetic friction between the block and the surface?
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