Resposta :
Resposta:
5m/s^2
Explicação:
a =
[tex] \frac{delta \: \: \: v}{delta \: \: \: t} [/tex]
a =
[tex] \frac{20 - 0}{4 - 0} [/tex]
a = 5m/s^2
[tex]\Large\boxed{\begin{array}{l}\sf a=\dfrac{\Delta v }{\Delta t}\\\\\sf a=\dfrac{20}{4}\\\\\sf a=5\,m/s^2\end{array}}[/tex]