如图,某港口要将一件重要物品用小艇送到一艘正在航行的轮船上,在小艇出发时,轮船位于港口
北偏西
且与该港口相距
海里的
处,并正以
海里/小时的航行速度沿正东方向匀速航行,经过
小时与轮船相遇,相遇点记为
.
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724638579408896/2724690669428736/STEM/6427075a10be4629a2dec5fa8579f645.png?resizew=253)
(1)若小艇以
海里/小时的航行速度沿北偏东
方向航行,则小艇能否及时将物品送到轮船上?
(2)为了保证小艇能将重要物品送到轮船上,请问小艇的速度至少为多少海里/小时?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53c7539ed297ea63b9ace6f5cc58ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724638579408896/2724690669428736/STEM/6427075a10be4629a2dec5fa8579f645.png?resizew=253)
(1)若小艇以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
(2)为了保证小艇能将重要物品送到轮船上,请问小艇的速度至少为多少海里/小时?
20-21高一下·浙江·期末 查看更多[1]
(已下线)【新东方】在线数学135高一下
更新时间:2021-05-19 23:40:16
|
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【推荐2】已知
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