one car moving on a straight road covers one third of the distance with 20 km/hr and the rest with 60 km/hr.the average speed is ?
Answers
Answered by
0
Answer:
The average speed is 40
Answered by
0
Answer:
36km/hr
Explanation:
Velocity for one third of distance V 1 =20km/h
Velocity for two third of distance V 2 =60km/h
Time take to cover one third of distance t 1 = d/3/V1
=
20/d/3
Time taken to cover two third of distance t 2= V 2/2d/3
= 60/2d/3
Average velocity =
totaltime/Totaldistance
V av = d/t 1 +t 2 = d/d/3/20 + 2d/3d/d
=36km/h
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