question_answer 8)

A comet orbits the Sun in a highly elliptical orbit Does the comet have a constant (a) linear speed (b) angular speed (c) angular momentum (d) kinetic energy (e) potential energy (f) total energy throughout its orbit ? Neglect any mass loss of the comet when it comes very close to the Sun. 

Answer:

A comet while going on elliptical orbit around the Sun has constant angular momentum and total energy at all locations but other quantities vary with locations.