In this equation, a. M represents the mass of the satellite and r is its radius. M represents the mass of the satellite and r the distance from Earth to the satellite. M represents the mass of Earth and r the distance from Earth to the satellite. According to the theory of general relativity, gravity is caused by a. the equivalence principle. The second postulate of special relativity states that a. observers can not detect their uniform motion except relative to other objects.
All orbits have both a perigee and an apogee.
The brightness of a light obeys the inverse square law. This statement implies that a. a light source will appear two times brighter at 2 meters than it does at 6 meters. True-False Questions 1. Galileo developed three theories of motion that became laws of motion when Newton proved Galileo's theories correct. Aristotle believed that objects falling to the ground fell at a constant speed.