本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
A planet of constant mass orbits the Sun in ae-i (hi+eob(pj4 tx9+ v1dfjan elliptical orbit. Negles)* g6q8ork:hk; g whkcting any friction effects, what happens to the planet's kinetic *kh8 s :h;gk)o6wqkrg energy?
A. It remains constant.
B. It increases continually.
C. It decreases continually.
D. It increases when the planet approaches the Sun, and decreases when it moves farther away.
参考答案: D
本题详细解析:
暂无
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