题目内容
(8分)摩托车障碍赛中,运动员在水平路面上遇到一个壕沟,壕沟的尺寸如图所示,要使运动员安全的越过这壕沟(空气阻力不计,
),则
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241221409922958.jpg)
(1)运动员在空中运动的时间为多少?
(2)摩托车的速度V0至少为多大?
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122140960471.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241221409922958.jpg)
(1)运动员在空中运动的时间为多少?
(2)摩托车的速度V0至少为多大?
(1)0.4s
(2)15m/s
(2)15m/s
(1)
---------------------(4分)
(2 )
---------------------(4分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122141007929.gif)
(2 )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122141023737.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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