prosze o pomoc w zadani z fizyki 18 km/h na m/s,30m/s na km/h

18 km/h  =  18* 1000 m/3600 s = 5 m/s 30 m/s = 30* 1/1000 km / 1/3600 h = 30* 3600/1000 km/h = 108 km/h