# How fast is a point at the top of the tire moving?

A typical road bike wheel has a diameter of 70 cm including the tire.

A) In a time trial, when a cyclist is racing along at 12 m/s how fast is a point at the top of the tire moving?

B) How fast, in rpm, are the wheels spinning?

A) In a time trial, when a cyclist is racing along at 12 m/s how fast is a point at the top of the tire moving?

B) How fast, in rpm, are the wheels spinning?

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