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 be 6 z,af /(nyp.aldf9oz low is a snapshot of three wqvf8j ), 05fezztcb d)ki*l 6 cars all moving counterclockwise during a one lap race flwq*bjt 8 eickd, f56)z)z0v on an elliptical track.
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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