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 is th+c2xdrknn) u2qjf 7+vr (o:jgamk(y 7at the Earth travels in a ci ffw z30rwbzw3.bl 1va(ua4; lrcular orbit about the Sun at constaufl 3zb zaw43rww;lb1(af.0v nt speed, at 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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