题目内容
物体以速度
水平抛出,若不计空气阻力,则当其竖直分位移与水平位移相等时,以下说法中正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132546960328.png)
A.竖直分速度等于水平分速度 | B.即时速度大小为![]() |
C.运动的时间为![]() | D.运动的位移为![]() |
CD
其竖直分位移与水平位移相等,即
,所以
,故竖直分速度
,所以A错误,此刻的瞬时速度
,B错误。由
得
,C正确。此刻的位移
,D正确。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547272770.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547397619.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547600473.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547631759.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547397619.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132547693589.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241325477401503.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容
A.竖直分速度等于水平分速度 | B.即时速度大小为![]() |
C.运动的时间为![]() | D.运动的位移为![]() |