In an experiment, a shearwater (a seabird) was taken from its nest, flown $5150$ km away, and released. The bird found its way back to its nest $13.5$ days after release. If we place the origin at the nest and extend the $+x$–axis to the release point, what was the bird's average velocity in m/s for the return flight?

Starting from the front door of a ranch house, you walk $60.0$ m due east to a windmill, turn around, and then slowly walk $40.0$ m west to a bench, where you sit and watch the sunrise. It takes you $28.0$ s to walk from the house to the windmill and then $36.0$ s to walk from the windmill to the bench. For the entire trip from the front door to the bench, what are your (a) average velocity? (b) average speed?

You normally drive on the freeway between San Diego and Los Angeles at an average speed of $105$ km/h ($65$ mi/h), and the trip takes $1$ h and $50$ min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only $70$ km/h ($43$ mi/h). How much longer does the trip take?

A car is stopped at a traffic light. It then travels along a straight road such that its distance from the light is given by $x\left(t\right)=b{t}^2-c{t}^3$, where $b=2.40$ m/s² and $c=0.120$ m/s³. Calculate the average velocity of the car for the time interval $t=0$ to $t=10.0$ s.