Odpowiedzi

2009-05-27T19:21:34+02:00
S = 120m = 0,12km
V = 108km/h
t = ?
V = s/t
t= s/v
t = 0,12km : 108km/h
t = 0,12km * h/108km
t = 0,12h * 1/108
t = 12/100h * 1/108
t = 1/900h
t = 1/900 * 3600s
t = 4s - czas potrzebny to 4 sekundy