Odpowiedzi

2009-11-23T20:29:01+01:00
T=1min=60s
V1=72km/h=20m/s
V2=10m/s
ΔV=20m/s-10m/s=10m/s
a=V/t
a=10m/s / 60s
a=1/6 m/s²

Odp. a=1/6 m/s²
2009-11-23T20:30:11+01:00
A = V/t
V 1 = 10 m/s
V 2 = 72 km/h = 20 m/s
zmiana V = 20 - 10 = 10m/s

t = 1 minuta = 60 sekund

a = 10m/s / 60s = 0,17 m/s2