Question

Cat este acceleratia acelui vehicul care in 15s isi mareste viteza de la 60 km/h la 90km/h?

Answer 1

Răspuns:

t=15s

v0=60km/h=60000m/3600s=50/3 m/s

v=90km/h=90000m/3600s=25m/s

a=?

a=(v-v0)/t=(25-50/3)/15=(75-50/3)/15=(25/3)/15=(25/3)×(1/15)=25/45=5/9=0,(5)m/s^2