Question

in cat timp strabate un automobil distanta de 15 km , dac el se deplaseaza cu 54km/h

Answer 1

d=15 km--->d=15.000m
v=54 km/h---->15 m/s ( Am facut asa: 54 *1000/3600s)
$v= \frac{d}{t} =\ \textgreater \ t= \frac{d}{v} = \frac{15.000m}{15m/s} =1000 s=\ \textgreater \ t=1000s$
Timpul este de 1000secunde