Question

a car covers 50 km with a uniform velocity of 45 km per hour and next 50km at 90km per hour. find the average velocity of car.

Answer 1

The initial velocity of car (u)= 45km/h
The final velocity(v)=90km/h
Average velocity=u+v/2
$= \frac{45 + 90}{2} \\ = \frac{135}{2} \\ = 67.5km$
Hence,the average velocity of car=67.5km/h

Answer 2

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