Question: a runner taking part in the 200m dash must run around the end of a track that has a circular arc with a radius of

a runner taking part in the 200m dash must run around the end of a track that has a circular arc with a radius of curvature of 30m. If he completes the 200m dash in 23.2s and runs at constant speed throughout the race, what is his centripetal acceleration as he runt the curved portion of the track?

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