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@lash
March 2022
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Um ponto material com velocidade de 20 m/s é freado uniformemente. Sabendo-se que o módulo da aceleração de freiamento é de 4 m/s2, qual o deslocamento sofrido pelo ponto material até parar?
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Mariani26
Velocidade^2=velocidade inicial^2 + 2.aceleração.distância
v^2=vo^2 + 2 a.d
0=400+2.-4.d
0=400-8d
8d=400
d=50metros
2 votes
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v^2=vo^2 + 2 a.d
0=400+2.-4.d
0=400-8d
8d=400
d=50metros