题目内容
(10分)滑板车运动,是青年学生喜爱的一项体育运动。某次比赛过程中,某同学乘滑板车比赛的过程简化如下:在平直的赛道上,自
点
由静止开始做匀加速直线运动,途中
时间内依次经过
两根标志杆,已知
相距60
,滑板车经过
时的速率为15m/s,求:
(1)滑板车经过
时的速率Vp?
(2)滑板车的加速度为多少?
(3)
间的距离为多少?(滑板车和同学均视为质点)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335558209.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412233557465.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335589217.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335605267.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335605267.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335636204.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335652216.gif)
(1)滑板车经过
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335667202.gif)
(2)滑板车的加速度为多少?
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122335683258.gif)
(1)5m/s
(2)1.67m/s2
(3)7.5m
(2)1.67m/s2
(3)7.5m
略
![](http://thumb2018.1010pic.com/images/loading.gif)
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