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2021年八年级物理下册8.2二力平衡导学案..pdf

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1、8.2二力平衡、课前预习导学1、物体保持_ 或 _ 状态，叫做平衡。平衡的物体所受的力叫做_。如果物体只受两个力而处于_ 或_ 状态的情况叫做二力平衡静止放在桌面上的书|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页，共 7 页2、二力平衡的条件是：作用在_ 体上的两个力，如果大小_，方向 _ 并且在 _ 这两个力就彼此平衡。3、物体在受到几个力作用时，如果保持_ 状态或 _ 状态，我们就说这几个力平衡。二、课堂研讨展示1、认识平衡状态和平衡力如右图所示的物体各处于怎样的状态？（a）（b小组讨论它们分别受到哪些力的作用？（a）（b（c（d（

2、c（d 悬挂静止的电灯匀速直线行驶的轮船结论：（1）平衡状态是指。（2）二力平衡是指。2、探究二力平衡的条件如右图所示，将系于卡片两对角的线分别跨过左右支架上的滑轮（1）在线的两端挂上钩码，使作用在小卡片上的两个力方向相反，且在一条直线上。看一看，在什么情况下卡片处于平衡状态？在什么情况下卡片不能平衡？（2）把小卡片转过一个角度，使小卡片受到的两个拉力不在一条直线上，但大小相等、方向相反。松手后，卡片能保持平衡吗?|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4

3、A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7

4、L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4

5、A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7

6、L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4

7、A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7

8、L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4

9、A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6课题二力平衡时间年月日课里课时主备人学生*14 恥+丄曲 _ 7.口阪-J 山JU 7E?一U B 匹结论:三、课堂巩固练习2、吊在空中重5N的电灯，静止不动时，电线对它的拉力是多大?3、跳伞运动员空中匀速下落，伞和人共受重力为700N，问：伞和人受阻力多大？四、课后反思质疑(1)请说说本节课我学到了:(2)本节课中你学到了什么知识和技能？请简要列举有哪些问题容易混淆?五、课外拓展延伸1、一个物体受到两个力的作用，这两个力的

10、三个要素完全相同，那么这两个力（A?一定不是平衡力；B?一定是平衡力；C?可能是平衡力；D?条件不足，无法判断二牛|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 3 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3

11、M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:C

12、L5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3

13、M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:C

14、L5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3

15、M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:C

16、L5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X62、如图1所示，三个钩码的重力为1牛，用三根绳子连接悬挂着，那么a绳受到的拉力为 _ ，b绳受到的拉力为_ 牛，c绳受到的拉力为 _

17、 .3、如图2所示，若悬绳A和弹簧秤B的重力不计，下列各对力中属于平衡力的（）A.A对B的拉力与B对C的拉力；B.B对A的拉力与A对B的拉力;C.A对B的拉力与C对B的拉力；D.B对C的拉力与C对B的拉力.A 2 牛F 1C 牛D 运动和力训练题一、填空题1?传送带正在运送货物，若选择 _ 为参照物，货物是静止的.2?早晨，太阳从东方升起”，这句话是以_ 为参照物的，地球又自转又公转”，是以 _ 为参照物的.3._ 地球同步卫星总是静止在地球某处的上空”，这是以 _ 为参照物的，若以太阳为参照物，这个卫星应是_ 的.|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎

18、.|下.|载.第 4 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档

19、编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6

20、N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档

21、编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6

22、N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档

23、编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6

24、N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X64?世界上一切物体都在 _，绝对静止的物体是 _ 的.5.个做匀速直线运动的物体在2 min内通过了300 m的路程，它运动的速度是 _ m/s,这个物体在前10 s内的速度是 _ m/s.6._ 火车的速度是54 km/h,子弹的飞行速度为100 m/s,那么 _ 的速度大.7.甲、乙两车做匀速直线运动，若两车在相同时

25、间内经过的路程之比是2:1,则速度之比是_，若两车经过相同路程所用的时间之比是1:2,则速度之比是 _.8.力是 _ 物体间力的作用是_?力不能脱离 _ 存在.9._ 人推车时，是_ 和间发生了力的作用，若以车为研究对象，施力物体是_，受力物体是 _;若以人为研究对象，受力物体是_ 施力物体是 _.10._ 牛顿第一定律也叫_ 律，其内容是：一切物体在_ 的时候，总保持 _ 状态或 _ 状态.11.虽然物体不受外力作用的情况是不存在的，但是由于牛顿第一定律是在_ 的基础上，经过_ 得出的，因此是正确的.12.在一条绳的一端拴上一个重物就做成了一个单摆，小明同学利用停表测出它摆动50个周期，所用

26、时间是40 s,它摆动一个来回所用时间为_ s.、单选题13.要想比较准确的量出地图上两点间铁路的长度，比较好的办法是A?用直尺直接去测量B.用准确度较高的直尺直接去测量|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 5 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

27、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 H

28、J5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

29、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 H

30、J5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

31、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 H

32、J5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6C?不能测量D?用弹性不大的软棉线跟曲线重合，拉直后测出线的长度14.正常人

33、平时步行的速度大约是A.1.2 m/s B.12 m/s C.1.2 cm/s D.1.2 km/s 15.某同学静止站在磅秤上，在下列几对力中，哪一对是平衡力A?人的重力与磅秤对人的支持力B?人对磅秤的压力与磅秤对人的支持力C?磅秤的重力与磅秤对人的支持力D.人的重力与人对磅秤的压力16.甲、乙两同学沿相反的方向各用15 N的力水平拉一测力计，测力计静止不动，测力计的示数是A.0 B.30 NC.20 ND.15 N17.扔出去的石块在空中继续向前运动，对此，下列说法正确的是A.石块继续运动是受到向前的冲力作用B.石块继续运动是受到惯性作用C.石块继续运动是石块具有惯性D.以上说法都不正确

34、|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 6 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编

35、码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N

36、7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编

37、码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N

38、7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编

39、码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N

40、7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X618.当汽车刹车时，乘客向前倾倒；汽车做匀速直线运动时，乘客不发生倾倒，在这两种情况中A.前者有惯性，后者没有惯性B.后者有惯性，前者没有惯性C.两者都有惯性D.两者都没有惯性|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|

41、欢.|迎.|下.|载.第 7 页，共 7 页文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

42、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 H

43、J5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

44、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 H

45、J5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8

46、X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6文档编码:CL5P8I5F7L1 HJ5D6N7F3M5 ZP7L4A7F8X6

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