Odpowiedzi

2009-11-03T18:28:58+01:00
30 min = 0.5 h

v = s/t

v = 15 km / 0.5 h
v = 30 km/h
2009-11-03T18:29:39+01:00
30 min=0.5 h

v=s/t
v=15km/0.5
v=30
v=30 km/h