Question

Un automobil străbate 72 km in timp de 36 min. Calculați viteza medie.

Answer 1

$d=72 \ km=72 \ 000 \ m \\ t=36 \ min=2160 \ s \\ \boxed{v_{med}-?} \\ \bold{Rezolvare:} \\ \boxed{v_{med}= \frac{d}{t} } \\ \Rightarrow v _{med}= \frac{72 \ 000 \ m}{2160 \ s } \\ \Rightarrow \boxed{v_{med}=33,(3) \ m/s}=2 \ km/min.$