Resposta:
Dados do problema:
[tex]v_0 = 0;\\\\v_f = 81\,\,m/s;\\\\\Delta t = 3\,\,s.[/tex]
Calculemos a aceleração média do carro:
[tex]a_m = \frac{\Delta v}{\Delta t}\\\\\Longleftrightarrow a_m = \frac{81}{3}\\\\\Longleftrightarrow \boxed{a_m = 27\,\,m/s^2.}[/tex]
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Resposta:
Dados do problema:
[tex]v_0 = 0;\\\\v_f = 81\,\,m/s;\\\\\Delta t = 3\,\,s.[/tex]
Calculemos a aceleração média do carro:
[tex]a_m = \frac{\Delta v}{\Delta t}\\\\\Longleftrightarrow a_m = \frac{81}{3}\\\\\Longleftrightarrow \boxed{a_m = 27\,\,m/s^2.}[/tex]