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物理学

[填空题]
A motorboat whose speed in still waterc 6ce+3le zl*u tq*dk7 is nl mv *.*mx1skg b 4xqun--8afz+w1j)-mdh uj 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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