本题目来源于试卷: 2011 美国F=ma物理竞赛 F=ma physics competition，类别为 美国物理杯赛(Physics Bowl)
[单选题]
A crude approximation +xm+8 i fiyd )w23dopbis that the E; :i;.cnggw)we ,vrmpf kvgm (,8e(9qoga q) garth travels in a circular orbit about the Sun at constant speed, a, qwiwk v(gmggvr) ,e.8 go )pnaq9;gcem( :f;t a distance of $150,000,000 \mathrm{~km}$ from the Sun. Which of the following is the closest for the acceleration of the Earth in this orbit?
A. exactly $0 \mathrm{~m} / \mathrm{s}^{2}$
B. $0.006 \mathrm{~m} / \mathrm{s}^{2}$
C. $0.6 \mathrm{~m} / \mathrm{s}^{2}$
D. $6 \mathrm{~m} / \mathrm{s}^{2}$
E. $10 \mathrm{~m} / \mathrm{s}^{2}$
参考答案: A
本题详细解析:
暂无
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