SOLAR SYSTEM

Detailed explanation-1: -The energy of orbiting satellites is defined as the energy needed to revolve around the earth. It has both kinetic energy and potential energy because it revolves around the earth and it is in the gravitational field of the Earth.

Detailed explanation-2: -While energy can be transformed from kinetic energy into potential energy, the total amount remains the same-mechanical energy is conserved. As a satellite orbits earth, its total mechanical energy remains the same.

Detailed explanation-3: -(i) Kinetic energy, potential energy or total energy of a satellite depends on the mass of the satellite and the central body and also on the radius of the orbit.

Detailed explanation-4: -As an orbiting object decreases in altitude or orbital radius r, its gravitational potential energy decreases and is transformed into kinetic energy. Thus, kinetic energy increases.