Physics Unit3: Kiematics Motion in Two Dimension & Vectors (id: dcaadad1c)

本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 通用国际物理

[单选题]
A swimmer heading directly a*gb6 j bj-, ilp2-uyyicross a river 200 m wide reaches the opposite ban;qt6 b7wqow ei8 z96ufsgnb*)k in 6 min 40 s. She is sweptufw)iwsqgzbt67b698 q o en*; downstream 480 m. How fast can she swim in still water?

A. 0.50 m/s
B. 1.2 m/s
C. 1.4 m/s
D. 1.8 m/s


参考答案:  A


本题详细解析: 暂无

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