2011 美国F=ma物理竞赛 F=ma physics competition (id: 6903260f1)

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 that the Earth trav)jmd1l exaj4.sg u; olp2z 5g/els in r6 c,qhu kd yn25o0zu.i8:hpj a circular orbit about the Sun at constanh.,iopuz jkch08 uqr562d:ynt 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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