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]
02.27: The diagram below shows thre hfgz*uc21 xzj nl) fivt/s(- 4:xmco5e roller v5gqgs*2 7z,m pp(ocy8fk )lx coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the 7p c5yg( 2fx)*pmqoslz ,8k gvtracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish? 
A. CartA
B. Cart B
C. Cart C
D. All would reach the finish at the sametime
参考答案: B
本题详细解析:
暂无
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