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 zkz0fg(p 3m e5wa fy5rq7*nf0John Glenn withq.2dw9 r lw2hke/zlbz dk(z anp(1)(v a gravitational force F at the surface of the Earth. When d r(( wvl2zpqd nzh1w.kea2 bz)(9/klhe made his famous second flight in orbit, the gravitational force on John Glenn while he was in orbit was closest 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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