Question

Um corredor percorre 1200m em 20s, sobre sua velocidade escalar média em m/s

Answer 1

∆s=1200m

∆t=20s

v=∆s/∆t

v=1200/20

v=60m/s

Answer 2

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

$\Large\displaystyle\text{ \begin{gathered} \sf{ V_m=\frac{1200\,m}{20\,s}} \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{ V_m=60\,m/s}}} \end{gathered} }$