The speed ratio of a bicycle is the (gear ratio* radius of the wheel)/ Length of the pedal arm.
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ratio
18 miles on the bicycle, 60 miles on the motorboat.
The index of refraction.
It is the average speed.
The ratio of (distance) / (time), called "speed".The ratio of (speed) / (time), called "acceleration".The ratio of (force) / (area), called "pressure".The ratio of (force) / (acceleration), called "mass".The ratio of (mass) / (volume), called "density".The ratio of (distance) / (volume), sometimes called "fuel economy".The ratio of ( 1 ) / (time), called "frequency".The ratio of (energy) / (time), called "power".