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]
99.11: Assume that the Earth attracts Johnk,k ( fhz04vck Glenn with a gravic wu6be+g(l; uq a35ertational force F at the surface of the Earth. When he made his famous second flight in orbit, the gravitational force on John Glenn while he was in orbit was cl;e+lg6 u35(bac qerwu osest to which of the following?
A. 0.95F
B. 0.50F
C. 0.25F
D. 0.10F
E. zero
参考答案: A
本题详细解析:
暂无
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