一个以v0=5 m/s的初速度做直线运动的物体,自始至终有一个与初速

一个以v0=5 m/s的初速度做直线运动的物体,自始至终有一个与初速度方向相反、大小为2 m/s2的加速度,则当物体位移大小为6 m时,物体已运动的时间可能为(  )

A.1 s                                       B.2 s

C.3 s                                       D.6 s

 

答案

:BC

解析:略

 

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