Odpowiedzi

2009-11-14T09:33:49+01:00
V=250
v=240
Δv=250-240=10km/h=36m/s
a=Δv/t=36m/s / 20s=1,8m/s²
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2009-11-14T09:35:25+01:00
V=250-240=10km/h=36m/s
t=20


a=v/t
a=36/20
a=1,8m/s²
2009-11-14T10:25:57+01:00
V₁ = 250 km/h
v₂ = 240 km/h
t = 20s

Δv = v₁ - v₂ = 10km/h = 100/36 m/s

a = Δv / t
a = (100/36 m/s) / 20 s
a = 5/36 m/s²