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★ wypward(金币+1):欢迎新虫 2010-06-29 11:47:28 hopingzou(金币+2, 翻译EPI+1): 2010-07-02 08:47:20
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In order to analyze the effects of motion orbit better, we can assume that an object at a height of 10m, does a curve motion upwards of a quarter circle with a radius of 1m, that is, reaches 11m. |
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