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v=240
Δv=250-240=10km/h=36m/s
a=Δv/t=36m/s / 20s=1,8m/s²
t=20
a=v/t
a=36/20
a=1,8m/s²
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