Answer:
The average velocity is 7.5 km per hour eastward.
Explanation:
(Average speed km/h) = (distance made in km) / (total time in h).
Speed = 15 km / 2 h = 7.5 km/h
Velocity is speed with direction. The direction of the person is "east" therefore the average velocity is 7.5 km/h eastward.
