Trigonometry

The wheels of a scooter have a diameter of 4.5 inches. If the person riding the scooter is traveling down hill at 15.0 mph. what is the approximate angular speed of the wheels in radians per second

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  1. Circumference = pi*D = 3.14 * 4.5 = 14.13 In. = 1.1775 Ft

    V=15mi/h * 5280Ft/mi * 6.28Rad/1.1775Ft
    * 1h/3600s. = 117.3 Rad/s.

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