本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
02.28: The diagram below shows three /ylao,fio3yk5v-bk ) roller coast , nda-s/r x7yy 5ghqc3er tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly 3 /yq-nxc 5s7 ghyard,over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first? 
A. CartA
B. Cart B
C. Cart C
D. All would reach the finish at the sametime
E. More information would be required
参考答案: A
本题详细解析:
暂无
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