1. Zamień jednostki: 15m/s=.......km/h 72km/h=.......m/min 18km/h=.......m/s 150 m/min=........km/h

15m/s=54km/h 72km/h=1200m/min 18km/h=5m/s 150m/min=9km/h

15 m/s = 0,015 km/h     72 km/h = 7200m/min 18km/h = 1800m/s    150m/min = 0,150km/h