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1、第 3 节 摩擦力精品练习题一、选择题1.如图所示，一个小物体以初速度v0冲上某一粗糙斜面，最后停在斜面上，忽略空气作用，对该过程的描述正确的是（）A物体最后停了下来，说明运动需要力来维持B物体受到重力、斜面的支持力、斜面的摩擦力三个力的作用C物体受到重力、斜面的支持力、斜面的摩擦力、向上的冲力四个力的作用D物体受到斜面的支持力和物体对斜面的压力是一对平衡力2.如图所示的做法中，目的是为了减小摩擦的是（）3.如图甲所示，放在水平地面上的物体，受到方向不变的水平拉力 F 的作用，其 F-t 和 v-t图象分别如图乙、丙所示，下列说法正确的是()A.当 t=2s 时，物体处于静止状态，摩擦力是 0
2、 B.当 t=3s 时，物体受到的摩擦力是 7N C.4-6s 内，物体运动的距离是 4m D.2-4s 内，物体的摩擦力变大二、填空题4.学校排球联赛中,小婷将迎面而来的球扣向了对方场地,如图所示,说明力可以改变物体A运动鞋底装鞋钉B轴承中装有滚珠C汽车轮胎刻有花纹D用力握紧球拍的。排球上有许多花纹.是采用增大接触面祖糙程度的方法来增大。5.在测量滑动摩擦力的实验中，用弹簧测力计水平拉动木块，使它沿长木板做匀速直线运动。弹簧测力计的示数是 N；如果在木块上再放一个钩码，则木块在木板上运动时受到的滑动摩擦力将。6.如左图所示，用尺子猛力将下面的棋子击出时，上面的棋子不会飞出而是落到正下方，是由
3、于它们具有 _；如图右所示，如果用尺子缓慢击打下面的棋子，紧挨被击打棋子上面的棋子会前移，是因为它受到 _的作用。7.如图所示，在玻璃杯里装上大半杯米，把一根筷子插在中间，将米压紧并使筷子直立，再往杯内加少许水，过一会儿拿起筷子，可以看到筷子把装米的玻璃杯提起来。这是因为米吸水后发涨发涩，既增大了米对筷子和米对玻璃杯的_，又增大了它们接触面的粗糙程度，从而增大了摩擦力。若米重 2N，玻璃杯重 1N，则当筷子提着米在空中静止时，米与筷子的摩擦力为_N。三、作图题8.如图所示，用力把一个物体压在竖直的墙壁上使其静止，请画出物体所受摩擦力的示意图文档编码:CO9U7M10C4P10 HK3R7J6Y
4、10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6
5、Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J
6、6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7
7、J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R
8、7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3
9、R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK
10、3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L49.如图所示，一物体沿粗糙斜面匀速下滑，请你作出该物体所受摩擦力的示意图（要求该力的作用点画在物体的重心上）。10.如图所示，
11、一辆汽车在水平路面上匀速行驶，请画出汽车在水平方向上受力的示意图（不计空气阻力）11.如图所示，用外力F把一个物体压在竖直的墙壁上使其静止，请画出物体在竖直方向上受力的示意图。四、实验题12.在“探究影响滑动摩擦力大小的因素”的实验中，小英做了如图甲所示的三次实验，用到了一个FvF压文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10
12、O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y1
13、0O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y
14、10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6
15、Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J
16、6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7
17、J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R
18、7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4弹簧测力计、一个木块、一个砝码、两个材料相同但表面粗糙程度不同的长木板。实验中第1 次和第 2次用相同的长木板，第3 次用表面更加粗糙的长木板。（1）实验时用弹簧测力计沿水平方向拉动木块，使其在水平桌面做_运动，根据二力平衡知识，可知滑动摩擦力的大小_（选填“大于”“等于”或“小于”）拉力的大小。（2）比较 1、2 两次实验，得出结论：_。（3）刚开始小英做第1 次实验时控制不好力度，
19、拉力随时间变化的图象如图乙所示，木块的速度随时间变化的图象如图丙所示，则木块在第7s 时的摩擦力为 _ N。13.小明按如下步骤完成探究“影响滑动摩擦力大小的因素”的实验：a如图 1中甲图所示，将木块A平放在长木板B上，缓缓地匀速拉动木块A，保持弹簧测力计示数稳定，并记录了其示数。b如图 1 中乙图所示，将毛巾固定在长木板B上，木块A平放在毛巾上，缓缓地匀速拉动木块A，保持弹簧测力计示数稳定，并记录了其示数。c如图 1 中丙图所示，将木块A平放在长木板B上，并在木块A上放一钩码，缓缓地匀速拉动木块A，保持弹簧测力计示数稳定，并记录了其示数。（1）该实验主要采用的探究方法是。（2）由图1 中两图
20、可知：当接触面粗糙程度一定时，接触面受到的压力越大，滑动摩擦力越大。（3）由图 1 中甲乙两图可知：当接触面受到的压力一定时，接触面越粗糙滑动摩擦力越（选填“大”或“小”）。（4）实验后小组交流讨论时发现：在实验中很难使木块做匀速直线运动。于是小丽设计了如图1 中丁图所示的实验装置，该装置的优点是长木板做匀速直线运动（选填“需要”或“不需要”）。实验中小丽发现：当F 为 3N时，木块 A相对于地面静止且长木板B刚好做匀速直线运动，则长木板文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C
21、5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5
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24、O5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6
25、ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6
26、 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O
27、6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4B受到地面的摩擦力大小为N。（5）实验拓展：如图2 所示，放在水平地面上的物体C 受到方向不变的水平拉力F 的作用，Ft和 vt 图象分别如图3 图 4 所示。则物体C在第 4 秒时受到的摩擦力大小为N。五、计算题14.我国自主研
28、发了一种氢燃料汽车，它使用氢气代替汽油，在一次测试中，汽车在平直路面上受到2000N的牵引力，5min 内匀速直线行驶了9000m，该车的质量是1.6t（取g=10N/kg）求：（1）汽车受到的阻力；（2）汽车受到的重力；（3）汽车运动的速度文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO
29、9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:C
30、O9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:
31、CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码
32、:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编
33、码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档
34、编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文
35、档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4第 3 节摩擦力精品练习题参考答案一、选择题1.答案：B 2.答案：B 3.答案 C 二、填空题4.答案：运动状态，摩擦力5.答案：2；变大。6.答案：惯性摩擦力7.答案：压力，3 三、作图题8.答案：如图所示。9.答案：如图所示。10.答案：如图所示。11.答案：如图所示。四、实验题12.答案：匀速直线;等于;在接触面粗糙程度一定时，压力越大，摩擦力越大;3 FGFf vB A v f F压f 文档编码:CO9U7M10C4
36、P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C
37、4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10
38、C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M1
39、0C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M
40、10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7
41、M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U
42、7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L413.答案：（1）控制变量法；（2）甲丙；（3）大；（4）不需要；3；（5）4。五、计算题14.答案：
43、（1）2000N（2）1.6 104N（3）30m/s（或 108km/h）文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码
44、:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编
45、码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档
46、编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文
47、档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4
48、文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L
49、4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4文档编码:CO9U7M10C4P10 HK3R7J6Y10O6 ZO5C5K8F8L4