Odpowiedzi

2009-11-18T10:40:47+01:00
T = 4 min = 1/15 h
v=20 km / h

s = v × t
s= 20 km/h × 1/15h = 1,33 km

2009-11-18T10:40:41+01:00
4 min=1/15h
V=s/t => s=V*t
s=20*(1/15)=20/15 (km)=4/3 (km)
2009-11-18T11:38:53+01:00
Dane:
t=4min= 240s
v=20km/h= 20 × 1000/3600 ≈ 5,5 m/s
Szukane
s=?

S=v × t
S = 5,5m/s × 240s ≈ 1320 m