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近地卫星和同步卫星

> 我国发射“神州九号”飞船与“天宫一号”实现空中对接，对接前分别在如图所示的圆形轨道上做匀速圆周运动。则（） A．“神舟九号”加速度较大 B．“神舟九号”速度较小 C．“神舟九号”周期较长 D．“神舟九号”速度大于第一宇宙速度

问题：

发布时间：2020-03-13

我国发射“神州九号”飞船与“天宫一号”实现空中对接，对接前分别在如图所示的圆形轨道上做匀速圆周运动。则（）

A．“神舟九号”加速度较大 B．“神舟九号”速度较小

C．“神舟九号”周期较长 D．“神舟九号”速度大于第一宇宙速度

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