vault backup: 2025-01-03 18:39:20
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@ -155,13 +155,13 @@ Calcule sua velocidade escalar média nos dois casos seguintes.
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$\Delta S_1 = 72m$
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$\Delta S_2 = 72m$
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$v_1 = 1,2m/s$
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$v_2 = 3m/s$
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$v_1 = 1,2m/s$
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$v_2 = 3m/s$
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$\Delta t_1 = \dfrac{\Delta S_1}{v_1} = \dfrac{72m}{1,2m/s} = 60s$
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$\Delta t_2 = \dfrac{\Delta S_2}{v_2} = \dfrac{72m}{3m/s} = 24s$
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$\Delta t_1 = \dfrac{\Delta S_1}{v_1} = \dfrac{72m}{1,2m/s} = 60s$
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$\Delta t_2 = \dfrac{\Delta S_2}{v_2} = \dfrac{72m}{3m/s} = 24s$
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$v_{média} = \dfrac{\Delta S_1 + \Delta S_2}{\Delta t_1 + \Delta t_2} = \dfrac{72m + 72m}{60s + 24s} = \dfrac{144m}{84s} = 1,71m/s$
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$v_{média} = \dfrac{\Delta S_1 + \Delta S_2}{\Delta t_1 + \Delta t_2} = \dfrac{72m + 72m}{60s + 24s} = \dfrac{144m}{84s} = 1,71m/s$
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🧐 **Resposta:** $2,1m/s$
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