19.如图是地球三个宇宙速度示意图当卫星绕地球作椭圆轨道运 动到达远地点时到地心距离为r速度为加速度为a 设地球质量为m万有引力 Template




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tomski19.如图是地球三个宇宙速度示意图当卫星绕地球作椭圆轨道运 动到达远地点时到地心距离为r速度为加速度为a 设地球质量为m万有引力 coloring