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匀变速直线运动

> 汽车以20 m/s的速度做匀速运动，某时刻关闭发动机而做匀减速运动，加速度大小为5 m/s 2，则它关闭发动机后通过37.5 m所需时间为 A．3 s B．4 s C．5 s D．6 s

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发布时间：2024-09-09

汽车以20 m/s的速度做匀速运动，某时刻关闭发动机而做匀减速运动，加速度大小为5 m/s ²，则它关闭发动机后通过37.5 m所需时间为

A．3 s B．4 s C．5 s D．6 s

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