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March 2022
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Se um móvel com velocidade de 20 m/s for freado e percorrer 40 m até parar, qual será o valor da aceleração provocada pelo freamento? Resposta: 5 m/s²
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IsaDoerl
Vo = 0
V = 20 m/s
Δs = 40 m
a = ?
V² = Vo² + 2.a.Δs
400 = 2.a.40
400 = 80.a
a = 5 m/s²
6 votes
Thanks 10
GFerraz
Vo = 20 m/s
V = 0
Δs = 40 m
a = ?
Aplicamos Torricelli:
2 votes
Thanks 1
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Lista de comentários
V = 20 m/s
Δs = 40 m
a = ?
V² = Vo² + 2.a.Δs
400 = 2.a.40
400 = 80.a
a = 5 m/s²
V = 0
Δs = 40 m
a = ?
Aplicamos Torricelli: