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What is the angular speel of a 19-in. diameter bicycle wheel if the bicycle if traveling at 29 ft/s?

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Speed = R w
R = 9.5 inch
Speed = 29*12 = 348 inch/s
w = angular speed = 348/9.5 = ? radians/s

Speed and R must both use the same length units when calculating w. I chose to use inches

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