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prędkość początkowa v₁ = 20 m/s
czas końcowy t₂ = 30m/s
przyspieszenie chwilowe a - ?
a = Δv /Δt = (v₂ - v₁) /(t₂ - t₁)
a = (30m/s - 20m/s) / (5s - 3s)
a = (10m/s)/ 2s a = 5m/s²