NEET Class neet Answered
A car is moving on a straight road covers one third of its distance with a speed of20 km/h &rest with a speed of 60km/h along straight line the avarege speed of car is?
Asked by Borkarvaibhav52 | 05 Jul, 2019, 08:06: PM
Expert Answer
Let the distnace travelled by a car on staright path be x.
The one thrid distance is covered with speed of 20 km/h and the rest two- third distance with speed of 60 km/h
Thus,
time required for the one third of the journey is
The time required for the rest part of the journey is
Thus the total time taken to complete the journey is,
Thus, the average speed is,
Average speed = Total distance travelled/ total time taken
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