In an experiment, a seabird was taken from its nest,flown 5150km away,and released.Ut found its way back to its nest 13.5 days after release.If we place the origin in the nest and extend the +x-axis to the release point,what was the bird’s average velocity in m/s a)for the return flight? b) for the whole episode, from leaving the nest to returning?
Average velocity is defined as the total displacement travelled by an object over the total time taken by an object during the period of consideration.
a) Here the period of consideration is only the return flight.
The displacement of the bird is -5150 km. (Negative sign indicates that the direction in which the bird travelled during the return flight is opposite to the positive x axis)
The time taken by the bird to return to the nest from the release point is 13.5 days.
Therefore the average velocity of the bird during the return flight is
(13.5 days is 324 hrs)
Therefore, the average velocity for the return flight of the bird is -4.42m/sec.
b) For the whole episode, the displacement of the bird is zero.(Since the initial and final position of the bird is same).
Therefore, the average velocity for the whole episode is zero (Since the displacement is zero).