Question

If a body travels 1/3 distance with a velocity 2 ms – 1 , next 1/3 distance with velocity 4 ms – 1 and the remaining 1/3 distance with velocity 6 ms – 1 , then the mean velocity of the body in m/s is:

Answer 1

Answer:

Let total distance d

Let time covered for first one third distance bet

1

Then t

1

=

4

d/3

=

12

d

t

2

be time for next two journeys

d−

3

d

=

3

2d

=2t

2

+6t

2

=8t

2

t

2

=

12

d

Averagevelocity=

Totaltime

Totaldistane

=

t

1

+2t

2

d

=

12

d

+

12

2d

d

=4m/s

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