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analuisa1917
@analuisa1917
October 2021
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No instante 4 s, uma carroça está no ponto 60 m de uma estrada é no instante 7 s ela se encontra na posição 120 m, Calcule:
a)A velocidade média no S.I.
b)A velocidade média em km/h
c)Analise a velocidade da carroça
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VM=ΔS/ΔT
VM = S-So/T-To
VM = 120-60/7-4
VM = 60/3
VM = 20 m/s
a) 20 m/s
b) 20 x 3,6 = 72 km/h
c) no instante 4s:
VM = ΔS/ΔT
VM = 60/4
VM = 15 m/s
no instante 7s:
VM = ΔS/ΔT
VM = 120/7
VM = 17,14 m/s
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VM = S-So/T-To
VM = 120-60/7-4
VM = 60/3
VM = 20 m/s
a) 20 m/s
b) 20 x 3,6 = 72 km/h
c) no instante 4s:
VM = ΔS/ΔT
VM = 60/4
VM = 15 m/s
no instante 7s:
VM = ΔS/ΔT
VM = 120/7
VM = 17,14 m/s