2.2位移变化规律 课件-2021-2022学年高一上学期物理鲁科版（2019）必修第一册

鲁科版2019物理必修一 2.1位移变化规律 Life is not about waiting for the storm to pass, its about learning to dance. <鲁科版必修1> Life is not about waiting for the storm to pass, its about learning to dance. 导入新课 在高速公路上，可以看到路旁或地面上有限速标志，路旁还有车距确认标志。限速及保持一定的车距都是为了防止发生交通事故。因为汽车速度越大，刹车过程中滑行的距离就越长，行驶的汽车之间车距越小，就越容易发生追尾相撞事故。你知道车速的大小与刹车时间、刹车距离以及车距到底有什么关系吗？ Life is not about waiting for the storm to pass, its about learning to dance. <鲁科版必修1> Life is not about waiting for the storm to pass, its about learning to dance. 思考与交流：如何来计算一段运动的位移？ 1.请在右图画出以速度v做匀速直线运动的物体的v-t图象，根据位移计算公式x=vt，观察图象的什么特征可以表示物体运动的位移？ 位移与时间关系 Life is not about waiting for the storm to pass, its about learning to dance. <鲁科版必修1> Life is not about waiting for the storm to pass, its about learning to dance. 2.下表是博尔特在北京奥运会百米赛跑的比赛中速度分段数据 先画出v-t图像，思考怎样去计算物体运动的位移 位移与时间关系 Life is not about waiting for the storm to pass, its about learning to dance. <鲁科版必修1> Life is not about waiting for the storm to pass, its about learning to dance. 3.在“探究小车的运动规律”的测量记录中，