Odpowiedzi

2009-11-23T16:01:12+01:00
Dane:
t=20 minut
s=20 km

Szukane :
v=?
wzór v=s/t
v=20 km/20 minut
v=1 km/min
8 3 8
2009-11-23T16:04:43+01:00
V = s/t
V = ?
s = 20km
t = 20min = 20/60h = 1/3h

V = 20km/1/3h = 20km*3h = 60km/h

Koniec ;]
9 4 9