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匀变速直线运动

> 物体由静止开始作匀加速直线运动，加速度大小是2m/s 2。它在某1s内通过的距离是9m。求：（1）物体在这1s初的速度是多少？（2）物体在这1s以前已经运动了多长时间。

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发布时间：2024-09-11

物体由静止开始作匀加速直线运动，加速度大小是2m/s ²。它在某1s内通过的距离是9m。求：（1）物体在这1s初的速度是多少？（2）物体在这1s以前已经运动了多长时间。

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