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2009-05-27T19:30:36+02:00
120cm/min=1,2/60 m/s = 12/10*1/60 m/s=1/50 m/s

1m=100cm
1min=60s

120cm=1,2m

125km/s = 125/ 1/3600 km/h= 125*3600 km/h= 450000km/h

1h=3600s /:3600
1/3600h=1s


10m/s =1/100:1/3600 km/h= 1/100*3600/1=36 km/h
1km=1000m
10m:1000=0,01km=1/100km
1s=1/3600h


25m/min = 1/40:1/60 km/h= 1/40*60/1 km/h=3/2 km/h= 1,5 km/h
25m:1000= 25/1000km= 1/40 km
1min:60=1/60h
2009-05-27T19:32:21+02:00
A) wyraz w metrach na sekundę:
120cm/min=0,02m/s
b) wyraz w kilometrach na godzinę:
30km/h=30km/h
125km/s=450000km/h
10m/s=36km/h
25m/min=1,5km/h