What is the speed of the satellite?

By definition, a geosynchronous orbit is equatorial. The Earth rotates (approximately) once every 24 hours- a g-sync satellite must traverse a circular path of radius 22000 miles in order to 'keep up'. The cirference of a circular geosynchronous orbit is, therefore, 2*pi*22000, or approximately 138,160 miles. In order to traverse this distance in exactly one day, the satellite must travel at 5,757 mph.