Physics Unit2: Kinematics One Dimensional Motion (id: 670f8b7d9)

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 for2awl/unv;,fx8 33 fhqot znki:9ggo +)ez n9v.biyi-rfn x 4; 3.0 h at 80 km/h and 2.0 h at 100 km/h. What is her average speed f).ineryx zf i-v9n4;bor the trip?

A. 85 km/h
B. 88 km/h
C. 90 km/h
D. 92 km/h


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便