Question

3
A car moving
On a straight road covers the
One third of the total distance with 20 kilometer per hour and
rest with 60kilometer per hour . The
average
speed is​

Answer 1

Answer:

Given,

Velocity for one third of distance V1=20km/h

Velocity for two third of distance V2=60km/h

 

Time take to cover one third of distance t1=V1d/3=20d/3

Time taken to cover two third of distance t2=V22d/3=602d/3

Average velocity =totaltimeTotaldistance

 Vav=t1+t2d=20d/3+602d/3d=36km/h