山西省忻州市第一中学高中物理15.3狭义相对论的其他结论预习案(无答案)新人教版选修3_4.doc

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1狭义相对论的其他结论【教学目标】1通过阅读和分析,知道相对论速度变换关系,并能进行简单计算。2通过讨论和分析,知道相对论质量关系,并能进行简单计算。【预习任务】阅读课本,识记狭义相对论的几个其他结论:1相对论速度变换关系式:当速度远远小于光速时,公式退化为:2识记:相对论质量(质速关系):当速度远远小于光速时,公式退化为:3识记:相对论中质量和能量的关系,即“爱因斯坦质能方程”:4思考:(1)课本 105思考与讨论(2)课本 106思考与讨论【自主检测】1相对论的速度变换公式:车对地的速度为 v,人对车的速度为 ,地面上的人看到u车上人相对地面的速度为 u 为 。如果人对车的速度与火车运动方向相同,取 值;如果车上人运动方向与火车运动方向相反, 取 值。u 2相对论质量:物体的质量是否随着速度的 而增大。严格的论证表明,物体以速度 运动时的质量 ,与它 的质量 之间的关系是 。运动时的质量 m 静止时的质量 m0。23微观粒子的速度很高,它的质量明显的 静止质量在研究制造回旋加速器时必须考虑相对论效应的影响4爱因斯坦质能方程为 。式中 m 表示的是物体的 ,E 表示的是它具有的 。【组内检查】1相对论速度变换关系式2相对论质量(质速关系)3爱因斯坦质能方程

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