Solve the all parts of given question:

Question: In an experiment, a shearwater (a seabird) was taken from its nest, flown 4235 km away, and released. It found its way back to its nest 14.6 days after it was released. If we place the origin at the nest and extend the +x axis to the release point,

Part I: What was the bird's average velocity for the following?

A: the return flight (Indicate the direction by the sign of the velocity.)

.........m/s

B: the whole episode, from leaving the nest to returning (Indicate the direction by the sign of the velocity.)

.........m/s

I don't understand how to get the answer. Can you please help me with this question?