本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 国际高中通用物理
[单选题]
The driver of a motorboat that can move at 10 m/s inbxewbks6 *gz/6c ( m8j still water wp +,gxi,j7s u,ex9karishes to travel directly across a narrow strait in which the current flows at 5.0 m/s. At what uar ,,+sjpgkex,i 79xangle 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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