阿摩線上測驗
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阿摩線上測驗
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1. A particle goes through uniform circular motion. At one instant, it is at the xy coordinates (-2.0 m, 3.0 m), has velocity v = -4.0 j m/s, and has acceleration a = +2.0 i m/s². What is the x coordinate (m) of the center of the circle?_____