小船匀速横渡一条河流,当船头垂直对岸方向航行时,在出发后10min到达对岸下游120m处;若船头保持与河岸成α角向上游航行,在出发后12.5min到达正对岸,求:(1)水流速度大小;(2)船在静水
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![小船匀速横渡一条河流,当船头垂直对岸方向航行时,在出发后10min到达对岸下游120m处;若船头保持与河岸成α角向上游航行,在出发后12.5min到达正对岸,求:(1)水流速度大小;(2)船在静水](/uploads/image/z/6180573-21-3.jpg?t=%E5%B0%8F%E8%88%B9%E5%8C%80%E9%80%9F%E6%A8%AA%E6%B8%A1%E4%B8%80%E6%9D%A1%E6%B2%B3%E6%B5%81%2C%E5%BD%93%E8%88%B9%E5%A4%B4%E5%9E%82%E7%9B%B4%E5%AF%B9%E5%B2%B8%E6%96%B9%E5%90%91%E8%88%AA%E8%A1%8C%E6%97%B6%2C%E5%9C%A8%E5%87%BA%E5%8F%91%E5%90%8E10min%E5%88%B0%E8%BE%BE%E5%AF%B9%E5%B2%B8%E4%B8%8B%E6%B8%B8120m%E5%A4%84%EF%BC%9B%E8%8B%A5%E8%88%B9%E5%A4%B4%E4%BF%9D%E6%8C%81%E4%B8%8E%E6%B2%B3%E5%B2%B8%E6%88%90%CE%B1%E8%A7%92%E5%90%91%E4%B8%8A%E6%B8%B8%E8%88%AA%E8%A1%8C%2C%E5%9C%A8%E5%87%BA%E5%8F%91%E5%90%8E12.5min%E5%88%B0%E8%BE%BE%E6%AD%A3%E5%AF%B9%E5%B2%B8%2C%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E6%B0%B4%E6%B5%81%E9%80%9F%E5%BA%A6%E5%A4%A7%E5%B0%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E8%88%B9%E5%9C%A8%E9%9D%99%E6%B0%B4)
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