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 roller coa *4;:bm h0sg tbr -asxvster track ar;kmnn :: (ob(k snk4s of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the :o4;k k:( (nkbnrmnas 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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