1.2rev/s * 9/6 * 26πin/rev = 147in/s
now just convert that to mi/hr
The sprocket assembly on a bicycle consists of a chain and two sprockets on the rear wheel. If the sprocket on the pedal is 9 inches in the diameter , the sprocket on the rear wheel is 6 inches in diameter , and the rear wheel is 26 inches in diameter, how fast is the bicycle traveling mph when the cyclist is pedaling at the 1.2 rev per second.?
I don't know what information to use.
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