Physics

13 July, 19:11

A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 45 m. If he completes the 200 m dash in 27.6s and runs at constant speed throughout the race, what is the magnitude of his centripetal acceleration (in m/s^2) as he runs the curved portion of the track?

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