人每小時平均行多少公里？？

正常成年人嘅步行速度大約係每小時五公里（平路或加少許上下坡）．
至於郊野公園以3Km/hr計，係因為有大有細，有老有嫩，同埋山路有上有落，所以預鬆少少．至於每小時4公里之說，就從來冇聽過．

For humans, walking is the main form of transportation without a vehicle or riding animal. An average walking speed is about three mph（Miles per hour ）or five km/h, although this depends heavily on factors such as height, weight, age and terrain. A pedestrian is a walking person, in particular on a road (if available on the sidewalk/path/pavement).

一般成人每小時平均可行3-4公里(視乎步速)

平均每小時行 3 公里

大約1.2m/s
=1.2/1000 x60 x60
=4.32km/hr

一個健康的成年人，若以不急促的步伐步行，平均每小時行四公里．

一般郊野公園的計法是三公里/小時的。 3 KM /hr