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1、第 六 节理解 教材 新知把握 热点 考向应用 创新 演练第 一 章知识点一知识点二考向一考向二随堂基础巩固课时跟踪训练知识点三Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回Eval
2、uation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5
3、 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Clie
4、nt Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 200
5、4-2011 Aspose Pty Ltd.返回Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回自学教材(1)位移时间图时间图 像：先设设定一个平面直角坐标标系，用横坐标标表示 ，用纵
6、纵坐标标表示物体的 ，再将物体做匀速直线线运动时动时 的数据在坐标标系中描点。由这这些点所得到的图图像表示物体 的关系，称为为位移时间图时间图 像(st图图像)。(2)匀速直线线运动动的位移图图像是一条 。时间时间位移位移与时间时间倾倾斜的直线线Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-20
7、11 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回重点诠释(1)由st图图像可以确定物体各个时时刻所对对应应的位置或物体发发生一段位移所需要的时间时间 。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Lt
8、d.Copyright 2004-2011 Aspose Pty Ltd.返回图图161(2)若物体做匀速直线线运动动，则则st图图像是一条倾倾斜的直线线，直线线的斜率表示物体的速度。斜率的大小表示速度的大小，斜率的正、负负表示物体的运动动方向，如图图161中的a、b所示。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Cop
9、yright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回(3)若st图图像为为平行于时间轴时间轴 的直线线，表明物体处处于静止状态态。如图图161中的c所示。(4)纵纵截距表示运动动物体的初始位置，图图161中所示a、b物体分别别是从原点、原点正方向s2处处开始运动动。(5)图线图线 的交点表示相遇，如图图161所示中的交点表示a、b、c三个物体在t1时时刻在距原点正方向s1处处相遇。Evaluation only.Evaluation only. Created with Aspose.Slides for .
10、NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回特别别提醒(1)st图图像只能用来描述直线线运动动。(2)st图图像表示的是位移s随时间时间 t变变化的情况，绝绝不是物体运动动的轨轨迹。 Evaluation only.Evaluation only. Created with Aspose.Slides for
11、 .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回图图1621.如图图162所示是两个匀速直线线运动动的位移图图像。哪条直线线所表示的运动动的速度大？各是多少？Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Cli
12、ent Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回答案：B直线线表示的运动动的速度大 1 m/s 2 m/sEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose
13、.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Asp
14、ose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回自学教材(1)在平面直角坐标标系中，用纵纵坐标标表示物体运动动的 ，用横坐标标表示 ，得出的 称为为速度时间图时间图 像(vt图图像)，简简称速度图图像。(2)匀速直线线运动动的vt图图像是一条和横轴轴 的直线线。图线图线 与t轴轴包围围的面积积表示的是位移。速度时间时间图图像平行Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with A
15、spose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回倾斜初速度加速度Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright
16、2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.返回重点诠释诠释 1用图图像法处处理问题问题 的优优点形象直观观，清晰便捷，能非常直观观地反映运动动物体的速度随时间变时间变 化的情况，便于从整体上认识认识运动动的特点。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011
