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Physics 14 Online
OpenStudy (anonymous):

A runner covers one lap of a circular track 40.0m in diameter in 63.0s . For that lap, her average speed is 1.99 m/s. For that lap, what is her average velocity? If she covered the first half-lap in 28.8s , what was her average speed for that half-lap? If she covered the first half-lap in 28.8s , what were her average velocity for that half-lap?

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