试题与答案

如图所示是一个质点做匀变速直线运动x-t图中的一段．从图中所给的数据可以确定（

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题型：选择题

题目：

如图所示是一个质点做匀变速直线运动x-t图中的一段．从图中所给的数据可以确定（　　）

A．质点在运动过程中经过图线上P点所对应位置时的速度大于2m/s

B．质点在运动过程中经过图线上P点所对应位置时的速度小于2m/s

C．质点在运动过程中经过图线上P点所对应位置时的速度等于2m/s

D．由于该图像是一条曲线，所以P点的速度可能大于2m/s，也可能等于或小于2m/s

答案：

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考点：s-t图像
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