gc physics textbook chapter 3 problems (id: 155ef8c3d)

本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB数学

[填空题]
A motorboat whose speedp nj6g kqz1dmvg5pp ; dde;v;j:4c+z; ; ) eps5j co9 cgy2e.bo:ec3xv in still water is 2.60 $\mathrm{~m} / \mathrm{s}$ must aim upstream at an angle of 28.5$^{\circ}$ (with respect to a line perpendicular to the shore) in order to travel directly across the stream. (a) What is the speed of the current?   
(b) What is the resultant speed of the boat with respect to the shore?   

参考答案:
空格1: 1.24±2%  空格2: 2.28±2% 


本题详细解析:

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