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匀变速直线运动

> 物体从静止开始做匀加速直线运动,第3s内通过的位移是3m,则 ( ) A．前3s的位移是6m B．3s末的速度是12m/s C．3s内的平均速度是2m/s D．第3s内的平均速度是1m/s

问题：

发布时间：2024-09-10

物体从静止开始做匀加速直线运动,第3s内通过的位移是3m,则 ( )

A．前3s的位移是6m B．3s末的速度是12m/s

C．3s内的平均速度是2m/s D．第3s内的平均速度是1m/s

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