dam naj ale za wszystkie i na 5 łatwe!

ciągnik 1000m: 20km/h= 30min mucha 1000m : 2m/s=500s=8 min 20s ryba 1000m : 2,5m/min =400min=6h 40 min robot 1000m :50cm/min =2000min=33h 20 min

1000 m = 1 km h= 60 min 60 min:20= 3 min 1000 m:2 m= 500 m 500 s:60= 8 min 20 s 1000 m : 2,5= 400 m 400 * 60s = 24000 s:60 =400 min 1000 m- 100000 cm 100000 cm:50 = 2000 cm 2000 min