人教版八年级物理《第八章-运动和力》复习课教学案(最新整理)

．如图所示，木块竖立在小车上，随小车一起以相同的速度向右做匀速直线运动。下列分析正确

．物体不受力的作用时处于静止状态

．物体运动状态改变时，一定受到力的作用

．银行工作人员数钱时，经常在手上沾些水，下雨后在泥地上走路容易摔倒，这两种情况下，水

．都增加摩擦 B．都减小摩擦

．前者增大摩擦，后者减小摩擦 D．前者减小摩擦，后者增大摩擦

的力垂直压在墙上静止不动，则物体A所受的摩擦力

的水平推力静止不动，则物体B所受的摩擦力是

．装卸工人利用斜面将一个木箱推到汽车上，如图所示。试在图中画出木箱在斜面上所受力的示

．在“探究摩擦力大小与那些因素有关”的实验中，同学们提出了以下几种猜想：

个带钩的长方体木块和一只弹簧测力计可供使用。小娟同学用弹簧测力计匀速拉动木块在水平放置的木板上进行三次实验，如图所示。实验数据如下表所示：

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At the end, Xiao Bian gives you a passage. Minand once said, "people who learn to learn are very happy people.". In every wonderful life, learning is an eternal theme. As a professional clerical and teaching position, I understand the importance of continuous learning, "life is diligent, nothing can be gained", only continuous learning can achieve better self. Only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. This document is also edited by my studio professionals, there may be errors in the document, if there are errors, please correct, thank you!