题目内容
甲、乙两球位于同一竖直直线上的不同位置,甲比乙高出h。分别将甲、乙两球以v1、v2的速度沿同一水平方向抛出,不计空气阻力,下列条件中有可能使乙球击中甲球的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250003091792333.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250003091792333.jpg)
A.同时抛出,且![]() |
B.甲迟抛出,且![]() |
C.甲早抛出,且![]() |
D.甲早抛出,且![]() |
D
试题分析:由于甲球比乙球高,要使乙球击中甲球,甲球早抛出,同时应满足
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000309257448.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000309273575.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000309288472.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000309304424.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.同时抛出,且![]() |
B.甲迟抛出,且![]() |
C.甲早抛出,且![]() |
D.甲早抛出,且![]() |