116问答网 > 高一必修二物理，小船过河问题；已知河宽d、水流速度V1、船在静止速度中速度为V2，如何求最短时间内

高一必修二物理，小船过河问题；已知河宽d、水流速度V1、船在静止速度中速度为V2，如何求最短时间内

2025-04-07 08:21:52
推荐回答（1个）
回答1：

最短时间t=d/v₂，与水流速度没有关系。

如果v₂>v₁最短位移为d，如果v₂

设最短位移为s，则有

s/d=v₁/v₂       (根据三角形相似）

得s=dv₁/v₂  

如果有加速度用有关加速运动的公式求解。分运动只不过由匀速变成了加速。

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