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ΔV=V₂-V₁ = 90km/h -18km/h = 72km/h
ΔV=72km/h = 20m/s
aśr= 20m/s / 20s = 1m/s²
pozdrawiam,
matteushq;)
a = (V1-V2)/t
a = (25m/s - 5m/s) / 20s
a = 20 m/s / 20s
a = 1ms^2