Physics Unit6: Work and Energy (id: 5f128c838)

本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理

[单选题]
A roller coaster starts with a speed of 5.0 m/s7pi)ocxoqdxo 1np8, v*xx z+a 9l(r*d at ifjw93.s;rpcb a3 l7oa point 45 m above the bottom of a dip (See Fig. 6-2). Neglect friction, what will be the speed of 7 3;ojpwsa lic9fr b.3the roller coaster at the top of the next slope, which is 30 m above the bottom of the dip?

A. 12 m/s
B. 14 m/s
C. 16 m/s
D. 18 m/s


参考答案:  D


本题详细解析: 暂无

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