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Cel mai inteligent răspuns!
2014-10-11T16:20:46+03:00

l = Vo·Δt + a·Δt²/2 ⇒Vo = (2l - aΔt²) /2Δt =(200-1200)/40 = - 25m/s V² = Vo² + 2al = 625+600= 1225⇒V=35m/s

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