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A car travel in a flat circle of radius R. At a certain instant the velocity of the car is 18 m/s west and the total acceleration of the car is 2 m/s2 at 46 degrees north of west. What is R?

I simply used a = v2/R and obtained 162 m. I suspected the question should be more complicated than I thought. Can anyone help. Thanks.

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# Homework Help: Circular motion

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