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A merry-go-round accelerating uniformly from rest achieves its operating speed of 2.5rpm in five revolutions. What is the magnitude of its angular accelaration?

A 33 1/3-rpm record on a turntable uniformly reaches its operating speed in 2.45s once the record player is turned on. (a) What is the angular distance traveled during this time? (b) What is the corresponding arc length in feet on the circumfrence of a 12in. diamater record?

A bicycle being repaired is turned upside down, and one wheel is rotated at a rate of 60 rpm. If the wheel slows uniformly to a stop in 15s, how many revolutions does it take during this time?