Physics Unit2: Kinematics One Dimensional Motion (id: 4c15f47af)

本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 国际高中通用物理

[单选题]
A motorist travels 160c 8s9r 5inisqaq0s3hxe+j, m8 km at ; gwid.wuh5w* 80 km/h and 160 km at 100 km/h. What is the average speed of the motorist fhw*wdu; 5 g.wior this 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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