问题:
发布时间:2020-03-13
力F作用在质量为
的物体上,在时间
内物体速度由
变为
,则力2F作用在质量为
的物体上,在时间
内物体动量的变化为 ( )
A.![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126401762.png)
B.![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126463623.png)
C.![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126526688.png)
D.![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126557686.png)
力F作用在质量为
的物体上,在时间
内物体速度由
变为
,则力2F作用在质量为
的物体上,在时间
内物体动量的变化为 ( )
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126042337.png)
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126089267.png)
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126136302.png)
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126198329.png)
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126261400.png)
![](http://picflow.koolearn.com/upload/papers//20140824/20140824133126089267.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
参考答案: