题目内容
将质量
的物体在离水平地面
高处以初速度
m/s水平抛出,物体受到跟
同方向的恒定风力F=5N作用,g取
。求:物体的水平射程。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118362418.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118378420.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118472288.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118487212.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118487411.gif)
25m
由
得
(3分)
物体获得水平方向的加速度
(2分)
则水平射程
(3分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118503473.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118518580.gif)
物体获得水平方向的加速度
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118550592.gif)
则水平射程
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115118550658.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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