题目内容
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818003194.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818097202.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818097202.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818128949.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241158181441481.jpg)
(1)A静止:
(2分)
(1分) 负电 (1分)
(2)B碰A动量守恒:
(2分)
AB飞出电场时间:
(1分)
AB加速度:
(2分)
AB侧位移:
(1分)
(1分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818159463.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818175468.gif)
(2)B碰A动量守恒:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818190554.gif)
AB飞出电场时间:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818206449.gif)
AB加速度:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818222612.gif)
AB侧位移:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818237503.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115818253806.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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