题目内容
两木块自左向右运动,现用高速摄影机在同一底片上多次曝光,记录下木块每次曝光时的位置,如图所示连续两次曝光的时间间隔是相等的,由图可知
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250015384178680.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250015384178680.png)
A.时刻t2以及时刻t5两木块速度相同 |
B.在时刻t3两木块速度相同 |
C.在时刻t3和时刻t4之间某瞬时两木块速度相同 |
D.在时刻t4和时刻t5之间某瞬时两木块速度相同 |
C
试题分析:上面的木块连续相等时间间隔内的位移之比为
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538433659.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538448516.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538464333.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538480812.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538495849.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538511803.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538542845.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538558502.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001538558513.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目