有关轮船过河的一些问题,高中大部分学生感觉难以处理,其原因主要是对运动的合成与分解理解不透彻,不会从矢量的运算中思考问题、解决问题,笔者根据多年的教学经验得知,从矢量的运算中来讲清这一问题是比较有效的方法,拙笔供出,以供各位同行鉴之.轮船过河,设河岸平直,船相对于水的速度为 v_船(即船在静水中的速度),水的流速为 With regard to some issues concerning the passage of ships, most students in senior high schools feel that it is difficult to handle. The main reason for this is that they do not have a thorough understanding of the synthesis and decomposition of sports. They do not think about problems and solve problems from vector operations. The author has learned from many years of teaching experience. Knowing that it is an effective way to understand this problem from vector operations, and to provide for your peers. The ship crosses the river and the river bank is straight. The speed of the ship relative to the water is v_ship ( The speed of the boat in still water), the flow rate of water is