题目内容
如图所示是做直线运动的甲、乙物体的位移—时间图象,由图象可判断下列说法中错误的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241618082346653.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241618082346653.png)
A.当t=t2时两物体相距最远 |
B.当t=t2时两物体相遇 |
C.甲起动的时间比乙早t1秒 |
D.当t=t3时两物体相距S0米 |
A
试题分析:AB、
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161808577380.png)
C、甲从零时刻开始运动,乙物体从
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161808795291.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161808795291.png)
D、当
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161809310382.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161809482377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824161809482377.png)
故选A
点评:图象上的任意一点表示该时刻的位置坐标,在时间轴上方位置坐标为正数,在时间轴下方位置坐标为负数,即图象中的坐标不是正数就是负数,位移图线是一条斜线表示物体做匀速直线运动.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目