题目内容
t/s | 0 | 5 | 10 | 15 | 20 | 25 | 30 |
![]() | 10 | 15 | 20 | 30 | 20 | 10 | 0 |
(1)画出摩托车运动的v-t图象;
(2)根据画出的v-t图象,利用求斜率的方法求出0~l0 s内的加速度和最后15 s内的加速度是多大;
(3)根据图象求出摩托车在这30s内的位移大小。
(1)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241203020172641.gif)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120302220378.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120302220389.gif)
(1)如图(3分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241203020172641.gif)
(2)0~l0 s内的加速度为:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120302267671.gif)
最后15s的加速度为:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120302282606.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241203022981255.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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