Zamień: 15m/h=.....m/s 150km/s=.....m/s 15m/s=.....m/min 15m/s=....km/h

15m/h=15·m/60s=15/60 m/s=1/4 m/s=0,25 m/s 150 km/s=150 · 1000m/s=150000 m/s 15 m/s=15m/1/60min=15·60 m/min=900m/min 15 m/s= 15·1000km/1/3600h=15*3600/1000 km/h=54 km/h