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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 31.5 m. if he completes the 200. m dash in 25.2 s and runs at constant speed throughout the race, what is the magnitude of his centripetal acceleration (in m/s2) as he runs the curved portion of the track?
Sagot :
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