本题目来源于试卷: Gravity and Planetary Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
98.24: A planet has ak-cj tnum4z nbof d:;-utu/h,6 0ik)c6 tgt-g radius one-half that of Earth and a mass 22xq0z iimp ;)n1ad0hgn j s0eone-fifth the Earth’s mass. The gravitational acceleration a 2 x zq;mjei ad0ig21npnh00s)t the surface of the planet is most nearly
A. $4.0 m/s^{2}$
B. $8.0 m/s^{2}$
C. $12.5 m/s^{2}$
D. $25.0 m/s^{2}$
E. $62.5.0 m/s^{2}$
参考答案: B
本题详细解析:
暂无
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