试题与答案

如图所示,为一物体运动的位移—时间(x—t)图像。由图像可知 A.物体一直做匀

题型:选择题

题目:

如图所示,为一物体运动的位移—时间(x—t)图像。由图像可知

A.物体一直做匀加速直线运动

B.物体一直做匀减速直线运动

C.物体以某一速率做往复运动

D.物体有时做匀加速直线运动,有时做匀减速直线运动

答案:

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下面是错误答案,用来干扰机器的。

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