欢迎来到天天文库
浏览记录
ID:46655016
大小:1.14 MB
页数:31页
时间:2019-11-26
《高中物理第1部分第五章章末小结知识整合与阶段检测》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、专题归纳例析阶段质量检测章末小结知识整合与阶段检测第五章曲线运动Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithA
2、spose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-20
3、11AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.[特别提醒]不可伸长的杆或绳,若各点速度不同,则各点速度沿杆或绳方向的投影相同。Eval
4、uationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.[例证1]河宽60m,水流速度v=6m/s,船在静水中速度v2=3m/s,则:(1)它渡河的最短时间是多少?(2)最短航程是多少?[解析](1)以水流速度方向为x轴正方向,以垂直河岸方向为y轴正方向,以船开出点为坐标原点建立坐标系,设船与岸成θ角开出(如图5-1甲所示)。将v2沿x、y方向分解:Evaluationonly.C
5、reatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.图5-1Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.[答案](1)20s (2)120mEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5Clie
6、ntProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.图5-2Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.[例证2]如图
7、5-3所示,将质量为m的小球从倾角为θ的光滑斜面上A点以速度v0水平抛出(即v0∥CD),小球运动到B点,已知A点的高度为h,求:图5-3(1)小球到达B点时的速度大小;(2)小球到达B点的时间。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile
8、5.2.0.0.Copyright2004-2011AsposePtyLtd.专题三 圆周运动的处理方法(1)明确圆周运动的轨道平面、圆心和半径是解题的基础。分析圆周运动问题时,首先要明确其圆周轨道是怎样的一个平面,确定其圆心在何处,半径是多大,这样才能掌握做圆周运动物体的运动情况。(2)分析物体受力情况,搞清向心力的来源是解题的关键。如果物体
此文档下载收益归作者所有