zamień jednostke prędkosci 22 m/s na km/h

1m/s=3,6km/h 22m/s=22*3,6km/h=79,2km/h  

22m/s=22*1/1000km / 1/3600h= 22* 1/1000km * 3600/1 h=22* 36/10 km/h = 22*3,6 km/h = 79,2 km/h