In an experiment, a tern (a seabird) was taken from its nest, flown a distance 5200 km away, and released. It found its way back to its nest a time 12.6 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 for the return flight? (m/s)
What was the bird's average velocity in {rm m/s} for the whole episode, from leaving the nest to returning?