题目内容
做匀速圆周运动的物体,10s内沿半径是20m的圆周运动了100m,则下列说法中正确的是
A.线速度大小是10m/s | B.角速度大小是10rad/s |
C.物体的运动周期是2s | D.向心加速度的大小是2m/s![]() |
A
试题分析:线速度是单位时间内通过的圆弧长度,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220728431939.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220729273450.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220730443395.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220731488619.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220732923765.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242207337501249.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220734639724.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824220735451820.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.线速度大小是10m/s | B.角速度大小是10rad/s |
C.物体的运动周期是2s | D.向心加速度的大小是2m/s![]() |