第一包下落高度:第二包下落高度:第一二包之间距离: 【做一做】 : 测定反应时间的小实验【做一做】 : 测定反应时间的小实验第五节 自由落体运动探究导航:探究三: 自由落体运动的规律应用器材:方案:一把长刻度尺 1. 关于自 由落体运动下列说法正确的是A. 物体竖直向下的运动一定是自 由落体运动B. 自 由落体运动是初速度为零加速度为g的竖直向下的匀 加速直线运动C. 物体只在重力作用 下从静止开始下落的运动叫自 由C. 物体只在重力作用 下从静止开始下落的运动叫自 由落体运动D. 当空气阻力小到可以忽略不计时, 物体从静止开始下落的实际运动可视为自 由落体运动()课堂检评:第五节 自由落体运动BCD2. 估算从三楼晾台上下落的花盆, 经多 长时间到达地面? 到达地面的速度有多 大?( 提示: 每层楼高约2. 8m, 凉台高约0. 9m)t=1.1sV=11m/s 第五节 自由落体运动课堂小结:回扣目标, 总结本节课所学内容作业拓展:课本第44页【做一做】 估测曝光时间 HVq*A5KgVq*A5KfUp&z5KfUp&z4JeTo&z4JeTo%y3IdSo%y3IdSn$x2HdSn$x2H cR m!w2HcR m!w1GbQl#w1 GbQl#v0FaPl#v0FaPkZu+EaPkZu+ E9OjYt+E9Oj Yt-D8N iXt-D8NiXs)C7MiXs) C7MhWr(B7MhWr( B6LgVq(B6LgVq*A5KfUq*A5KfUp&z4JfUp&z4JeTo%y4JeTo%y3IdSn%y3IdSn$x2HcRn$x2H cRm! w1GcRm!w1GbQl#v1 GbQl#v0FaPk#v0FaPkZu+E9OkZu+E9OjYt-D9Oj Yt-D8NiXs-D8NiXs)C7MhXs)C7MhWr(B6LhWr( B6LgVq*A6LgVq*A5KfUp*A5KfUp&z4JeUp&z4JeTo%y3IeTo%y3IdSn$x3IdSn$x2HcR m$x2H cRm!w1GbRm!w1GbQl#v0FbQl#v0FaPkZu0FaPkZu+E9OjZu+ E9OjYt-D8OjYt-D8N iXs)C8NiXs) C7MhWr)C7M hWr(B6LgWr( B6LgVq*A5LgVq*A5KfUp&z5KfUp&z4JeTo&z4JeTo%y3I dTo%y3IdSn$x2IdSn$x2HcR m!w2HcRm! 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