A motorboat,which has a speed of 5 meters per second in still water,is headed wast as it crosses
a river flowing south at 3.3 meters per second.What is the magnitude of the boat's resultant velocity with respect to the starting point?
有点晕,为什么向东还要向南?
人气：432 ℃ 时间：2020-06-05 15:58:15
解答
船驶向西边,但水流向南边,求的是一个和速度,使用勾股定理就可以了.
加油!
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