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Predicting changes in centripetal acceleration


A bicycle racer rides around a circular track of radius R. The racer speeds around its first lap at linear speed v, start subscript, i, end subscript. Later, their speed decreases to start fraction, 1, divided by, 3, end fraction, v, start subscript, i, end subscript.
How does the magnitude of the racer's centripetal acceleration change after the linear speed decreases?
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