﻿ A body travelling along a straight line traversed one-third of the total distance with a velocity 4 m/s. The remaining part of the distance was covered with a velocity 6 m/s for the other half of time. What is the mean velocity averaged over the whole time of motion?  from Physics Motion in A Plane Class 11 Manipur Board

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A body travelling along a straight line traversed one-third of the total distance with a velocity 4 m/s. The remaining part of the distance was covered with a velocity 6 m/s for the other half of time. What is the mean velocity averaged over the whole time of motion?

Let s be the total distance travelled by body.

If t1 is the time taken to cover first one-third distance, then

Let t2 be the time for each of the remaining two journeys.

Then,

Therefore,

Average velocity =

=

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