Question

qual é a velocidade em 1 hora de uma pessoa que percorre a pé 1200m em 20 minutos?​

Answer 1

Se:

1200m = 20min

x = 60min

20x. = 72000

x = 72000 / 20

x = 3600m/h

Vel= 3600m/60min ou 3,6km/h

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \sf{ 1200\,m\rightarrow1{,}2\,km} \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{ 20\,min\rightarrow\frac{1}{3}\,h} \end{gathered} }$

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

$\Large\displaystyle\text{ \begin{gathered} \sf{ V_m=\frac{1{,}2\,km}{\dfrac{1}{3}\,h}} \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered}\boxed{\boxed{ \sf{ V_m=3{,}6\,km/h }}}\end{gathered} }$