Odpowiedzi

2010-04-14T20:33:43+02:00
S = V*t
S - droga [m]
V - predkość [m/s]
t - czas [s]

S1-S2=600 m
V1*t1-V2*t2=600

t*(V1-V2)=600
t=600 /(7-5)
t=600 /2
t=300s
t=5min
6 3 6
2010-04-14T20:34:30+02:00
S=600m
V=7m/s-5m/s
V=2m/s
t=s/V
t=600m/2m/s
t=300s
t=5min
2 5 2
2010-04-14T20:37:33+02:00
Dane:
s- 600 m
v1= 7m/s
v2=5m/s
szukane:
t=?
v=7-5=2s
t= 600/2=300s
5 min
2 5 2