Odpowiedzi

2010-01-10T17:41:29+01:00
90-54=36km/h
36km/h* 1000m/3600s=10m/s
a=v/t
a=10/10
a=1m/s2
2010-01-10T17:43:22+01:00
Dane:
V₁ = 54 km/h = 54000m/3600s = 15 m/s
V₂ = 90 km/h = 90000m/3600s = 25 m/s
t =10s
Rozw.:
a = ΔV/t = V₂ - V₁ / t = 10 [m/s] / 10s = 1 [m/s²]