小船渡河问题是运动的合成与分解的典型问题,本文对渡河过程中涉及的问题进行总结并举例分析. 一、渡河问题中的合成与分解原理 如图1所示,若船的发动机关闭,河水的流速为v1,(即河水相对于河岸的速度),则船只具有河水赋予它的速度v1,船只在沿平行河岸的 The problem of boat crossing is a typical problem of the synthesis and decomposition of the movement. This article summarizes the problems involved in the process of crossing the river and gives an example. First, the principle of synthesis and decomposition in the river crossing issue is shown in Figure 1. If the engine of the ship is closed, the river The flow rate is v1, (ie, the speed of the river relative to the bank), the vessel has the speed v1 that the river water gives it, and the vessel is along the parallel bank.