Math/Physics

If I have 24 inch Diameter tires that rotated 101 times in 15 seconds, how do I find out how fast they were going?

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asked by Kayln
  1. 1 rotation is 24pi
    so the speed would be
    101*24pi/15 inches/sec
    = 507.68137 inches/sec
    =42.306781 ft/sec .... I divided by 12
    = 2538.4069 ft/min ... I multiplied by 60
    = ...
    = ...

    Can you see what I am doing to change my units?
    You probably want mi/hour. Tell me what you get.

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    posted by Reiny

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