A satellite heading due north above the northern hemisphere appears to an observer on Earth to feel a westward force with no physical origin. What is such a force called?

1. Real forces have a physical origin, such as gravity or a push. 2. Fictitious forces arise simply because the observer sits in an accelerating or rotating frame. 3. Earth is rotating towards the east and moves east under the satellite. 4. In the frame of Earth that shows up as an apparent westward force on the satellite. 5. Nothing physically pushes the satellite west, so the force is fictitious. 6. On the large scale these effects are easily seen in weather systems and ocean currents. _Source: OpenStax College Physics (CC BY 4.0), Ch 4 "Dynamics: Force and Newton's Laws of Motion", section 4.5 Normal, Tension, and Other Examples of Forces_