Odpowiedzi

2010-04-10T21:48:59+02:00
5 m/s = 5/1000 * 3600/1 km/h = 18 km/h
czyli odp. b)
2 5 2
2010-04-10T21:50:28+02:00
5m/s=0,005km/s=18km/h

0,005:3600=18
2010-04-10T21:52:46+02:00