Question

um trem viaja com velocidade constante de 50 Km/h. Quantas horas ele gasta para percorrer 300 km ?​

Answer 1

Resposta:

$t = \frac{s}{v} \\ t = \frac{300}{50} \\ t = 6h$

Answer 2

$\large\boxed{\begin{array}{l}\sf V_m=\dfrac{\Delta S}{\Delta t}\iff\Delta t=\dfrac{\Delta S}{V_m}\\\\\sf \Delta t=\dfrac{300}{50}\\\\\sf\Delta t=6\,h\end{array}}$