Question

un motociclist se deplaseaza cu viteza de 54 km/h. In cat timp parcurge distanta de 18 km?

Answer 1

v= distanta supra timp
v= 18km supra t (timp)
54km/h= 18km supra t
t= 18km/54
t= 0,3 h

Answer 2

timpul = distanta/viteza

t = 18 km / 54 km/h = 0, (3) h  = 20 min ( 0,33 x 60)

sau :

8 km = 18000 m  

54 km/h = 54000 m / 3600 sec = 15 m /sec

t = 18000m / 15 m/sec = 1200 sec = 20 min ( 1200 /60 )