What general statement can be made about the areas a radius vector for these satellites covered in each one hour period?

The speed of satellite is constant and it is able to cover equal distance in each 1-hour period.  

Explanation:

Satellite is artificial or natural body which revolves around any planet. Our earth has a natural satellite known as moon. There are a lot of artificial satellites which revolve around the earth continuously. The time period of all the satellites are fixed. They are designated and designed to have uniform circular motion around the earth.

This satellite is very useful for the earth as it transmits signals from one corner of the earth to the other corner. some of the satellite are known as geostationary satellite which revolves around the earth with the same speed as of the earth.  

that scientist would be robert hooke