You haven't described the shape of the orbit.
Fortunately, it doesn't matter.
Average speed = (distance covered) / (time to cover the distance)
= (2.0 x 10⁷ meters) / (1 hour)
= 2.0 x 10⁷ meters/hour
= 5,555 and 5/9 meters/second .
Note that this is the satellite's speed.
Regarding velocity:
Velocity = (displacement) / (time for the displacement)
= 10 meters/hour
= 0.002777... meters/second (rounded)
in the direction from the starting point
to the location after that one hour.
