Question

Em quanto tempo um veículo se movendo com velocidade média de 80 km/h percorre os 200 km entre duas cidades?

Answer 1

$\Large\displaystyle\begin{gathered} \tt(I)~\sf{ F\acute ormula:}\end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{ V_m=\frac{\Delta S}{\Delta t}\iff\Delta t=\frac{\Delta S}{V_m}}}} \end{gathered} }$

$\Large\displaystyle\begin{gathered} \tt(II)~\sf{Dados: } \end{gathered}$

$\Large\displaystyle\begin{gathered} \begin{cases}\sf V_m=80\,km/h\\\sf\Delta S=200\,km\\\sf\Delta t=?\,h\end{cases}\end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \tt(III)~\sf{ Soluc_{\!\!,}\tilde ao:} \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{\Delta t=\frac{200}{80} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \therefore\underline{\boxed{\boxed{\sf{\Delta t=2{,}5\,h }}}} ~~(\checkmark)\end{gathered} }$