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速度与机械运动

> 根据你对生活中物理量的认识，指出下列数据符合实际的是 A.一支新铅笔的长度约为18dm B.人步行的速度是5m/s C.公路上行驶的汽车速度50km/h D.人跑步的速度为10m/s

问题：

发布时间：2024-09-11

根据你对生活中物理量的认识，指出下列数据符合实际的是

A.一支新铅笔的长度约为18dm
B.人步行的速度是5m/s
C.公路上行驶的汽车速度50km/h
D.人跑步的速度为10m/s

参考答案：

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