Merry-go-rounds are a common ride in park playgrounds. The ride is a horizontal disk that rotates about a vertical axis at their center. A rider sits at the outer edge of the disk and holds onto a metal bar while someone pushes on the ride to make it rotate. Suppose that a typical time for one rotation is 6.0 ss and the diameter of the ride is 14 ftft . Part A For this typical time, what is the speed of the rider, in m/sm/s? Express your answer in meters per second. vv = m/sm/s Part B What is the rider’s radial acceleration, in m/s2m/s2? Express your answer in meters per second squared. aradarad = nothing m/s2m/s2 Part C What is the rider’s radial acceleration if the time for one rotation is halved? Express your answer in meters per second squared. aradarad = nothing m/s2m/s2

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