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自由落体运动

> 关于自由落体运动(g＝10 m/s 2)，下列说法中正确的是( 　　) A．它是竖直向下，a＝g的匀加速直线运动 B．在第1s内、第2s内、第3s内通过的位移之比是1∶3∶5 C．在1 s末、2s末、3s末的速度大小之比是1∶2∶3 D．下落开始连续通过三个5m的位移所用的时间之比为

问题：

发布时间：2024-09-13

关于自由落体运动(g＝10 m/s ²)，下列说法中正确的是( 　　)

A．它是竖直向下，a＝g的匀加速直线运动

B．在第1s内、第2s内、第3s内通过的位移之比是1∶3∶5

C．在1 s末、2s末、3s末的速度大小之比是1∶2∶3

D．下落开始连续通过三个5m的位移所用的时间之比为

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