如图,在△ABC中,∠B=90°,AB=8厘米,BC=6厘米,P、Q是△ABC边上的两个动点,其中点P从点A开始沿A→B方向运动速度为1厘米/秒,点Q从点B开始沿B→C→A方向运动速度为2厘米/秒,若它们同时出发,设出发的时间为t秒.
(1)求出发2秒后,PQ的长;
(2)点Q在CA边上运动时,当△BCQ成为等腰三角形时,求点Q的运动时间.
(1)求出发2秒后,PQ的长;
(2)点Q在CA边上运动时,当△BCQ成为等腰三角形时,求点Q的运动时间.
![](https://img.xkw.com/dksih/QBM/2020/5/22/2468260232232960/2469785081823232/STEM/2fe6df0ebee34a53a1767cf6925fb4de.png?resizew=277)
19-20八年级下·甘肃张掖·阶段练习 查看更多[3]
甘肃省张掖市甘州区南关中学2019-2020学年八年级下学期第一次阶段测试数学试题安徽省宣城市宣州区2020-2021学年八年级下学期期中数学试题(已下线)期中真题精选(压轴60题专练)-2022-2023学年八年级数学下学期期中期末考点大串讲(人教版)
更新时间:2020-05-24 20:13:31
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【推荐2】【问题呈现】
(1)如图1,
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【类比探究】
(2)如图2,
和
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【拓展提升】
(3)如图3,
和
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