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]
The driver of a motorboat that can move at 10 m/s in still waterd//)nlzqfg5 e wiqnn7ma *g4xx.0mi m*r2 5tuk*guwsk 2k zr r30shes to travel directly across a uxxsm u*32tm4rw kkm0. z0g2q*n *kg7nrri5 anarrow strait in which the current flows at 5.0 m/s. At what angle upstream should the driver head the boat?
A. $27^{\circ}$
B. $30^{\circ}$
C. $60^{\circ}$
D. $63^{\circ}$
参考答案: B
本题详细解析:
暂无
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