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]
03.01: The diagram b wv4djm5 :sw)nelow is a 73ib0n(dnazsx qstwzj;y rk( r2(7 0tsnapshot of three cars all moving counterclockwise during a o 0(r(n(t jaq77 ;kzb2zstrni y0wdx s3ne lap race on an elliptical track.
Which car has had the lowest average speed during the race so far?

A. carA
B. car B
C. car C
D. all three cars have had the same average speed
E. cannot be determined with information provided
参考答案: C
本题详细解析:
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