all depend on your reference frame


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送交者: 赤城 于 2007-09-13, 11:50:07:

回答: 没有空气就可以了吗?月球上可行吗? 由 老中乙号 于 2007-09-13, 11:41:56:

If a plane can fly at the angular velocity of the earth, it may appear to be stationary to an observer within the solar system. But for an observer outside of the solar system it sill moves at the speed of the solar system.



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