两颗人造卫星A、B绕地球做圆周运动，周期之比为TA:TB1:

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更新 2022-09-03
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两颗人造卫星A、B绕地球做圆周运动，周期之比为T_A:T_B=1:8，则轨道半径之比和运行速度之比分别为：
A．r_A:r_B="4:1" , V_A:V_B="1:2 " B．r_A:r_B="4:1" , V_A:V_B="2:1"
C．r_A:r_B="1:4" , V_A:V_B="1:2 " D．r_A:r_B="1:4" , V_A:V_B="2:1"

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