本题目来源于试卷: Rotational basic parameter,类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.02: The diagram below is a snapshot of t gptxvzo**5h o- z+tz ,imq. w-hree cars j/- v)w wi1-l hh8/;bbb.dwrbrfv(xx all moving counterclockwise during a one lap race on an elliptical track bvrh ;)vlh-wbjri-.(/wx b/8f dbxw 1.
Which car at the moment of the snapshot MUST have a net force acting on it?
A. carA
B. car B
C. car C
D. all three cars have net forces acting on them
E. cannot be determined with information provided
参考答案: D
本题详细解析:
暂无
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