题目内容
质量为8×103kg的汽车以1.5m/s2的加速度加速,阻力为2.5×103N,那么汽车的牵引力是 ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130210462811.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130210462811.png)
A.2.5×103N | B.9.5×103N | C.1.2×104N | D.1.45×104N |
D
由受力分析,根据牛顿第二定律:![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130210509594.png)
,选D.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130210509594.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241302105091570.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.2.5×103N | B.9.5×103N | C.1.2×104N | D.1.45×104N |