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Ep1 + Ek1 = Ep2 + Ek2
mgh1 + 1/2mv1^2 = mgh2 + 1/2mv2^2
2x9,8x7,35 + 0 = 0 + 1/2x2xv2^2
144,06 = v2^2
v2 = 12m/s
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