Question

A body covers one-third of its journey with speed 7. The remaining portion of the distance was covered
velocity for half the remaining time and with velocity v, for the other half of the remaining time. Assumi
body always travels in a straight line, find the average velocity of body over the whole journey.
please it's urgent​

Answer 1

Answer:

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Answer 2

Explanation:

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