设物体运动的加速度为a、速度为v、位移为x.现有四个不同物体的运

设物体运动的加速度为a、速度为v、位移为x.现有四个不同物体的运动图象如图所示,假设物体在t0时的速度均为零,则其中表示物体做单向直线运动的图象是(  

    

  

      A         B                C         D

答案

C

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