Answer
a. -4.42 m/s.
b. 0 m/s.
Work Step by Step
a. The average velocity is the displacement divided by the elapsed time.
$$\frac{0m – 5150000 m}{1166400s – (0 s)} = -4.42 \frac{m}{s}$$
b. For a round trip, the displacement is zero and the average velocity is zero.
