1 . 一辆大客车正在以
的速度匀速行驶,突然司机看见车的正前方
处有一只小狗,如图所示.司机立即采取制动措施,司机从看见小狗到开始制动,客车的反应时间为
,设客车制动后做匀减速直线运动,为了保证小狗的安全,客车制动的加速度至少为多大( )(假设这个过程中小狗一直未动)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/3db8e02d-e094-48d3-a56f-14ef0bfe802a.png?resizew=408)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff2636315654b4e60e9b2ef9405843e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aaa43d30c538ddbbc711646f9da7799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ed6b29854c98b86b4a21c85b54f246.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/3db8e02d-e094-48d3-a56f-14ef0bfe802a.png?resizew=408)
A.2m/s2 | B.4m/s2 |
C.5m/s2 | D.6m/s2 |
您最近一年使用:0次
A.2m/s2 | B.4m/s2 |
C.5m/s2 | D.6m/s2 |