Physics Unit5: Circular Motion & Gravitation (id: e1bb74a77)

本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation，类别为 通用国际物理

[单选题]
The speed of Halley's Comet, wh+ nv9wn;0z rmiile travelic xoj-w7g9l. ung in its elliptical orbit around the Sun,jluxg-7o .w 9c

A. is constant.
B. increases as it nears the Sun.
C. decreases as it nears the Sun.
D. is zero at two points in the orbit.


参考答案:  B


本题详细解析: 暂无

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