Physics Unit2: Kinematics One Dimensional Motion (id: 36bf10ffb)

本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 通用国际物理

[单选题]
A motorist travels 160 km at 80 km/h and 160 km at 100 k+u62yb0,hl9f-n pq3bve hlk am/h.x0 mi6ogbcg :0rfj* psf*w/2u What is the average speed of the motorist for thi0ji*w* x rg:fbuog60 pfs /2cms trip?

A. 84 km/h
B. 89 km/h
C. 90 km/h
D. 91 km/h


参考答案:  B


本题详细解析: 暂无

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