本题目来源于试卷: Physics Bowl by Topic 2: Kinematics - part I General Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
12.29: A vehicle completes one lap around a cph2jqcz)lxl.bm2j b (4, w-tlircular track at 4v8ciri 8. oush ay;76hb;2cg c5mdvgan average speed of 50 m/s and then completes a second la;4imsa.d2 b6r chhg u;o78ycvcgi58v p at an average speed of $V$. The average speed of the vehicle for the completion of both laps was 80 m/s. What was the average speed $V$ of the second lap?
A. 100 m/s
B. 110 m/s
C. 125 m/s
D. 150 m/s
E. 200 m/s
参考答案: E
本题详细解析:
暂无
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