According to the law of conservation of energy, the ENERGY of the system ramains constant and the total energy is the sum of kinetic and potential energy.
How to understand the law of conservation of energy?
1.
Potential energy is the energy caused by the position of the body so, at point A, the comet has the greatest potential energy because it is at rest. On the other hand, at point E, the comet has the least potential energy because it is in motion.
2.
Kinetic energy is the energy that is caused by the motion of a body so, at point E, the comet has the greatest kinetic energy because it is moving fast and is in motion. But at point A, the comet has the least kinetic energy because it is not in motion.
3. Here the potential energy is transformation is placed into kinetic energy from point B to point D .because the comet is changing from rest to motion.
4. the kinetic energy is transformed into potential energy because the comet is changing from motion to rest.
5. As we know that the total energy is the sum of kinetic and potential energy. When the comet is closest to the sun, its total energy is kinetic energy and zero potential energy so total energy is equal to kinetic energy.
6. As we know that the total energy is the sum of kinetic and potential energy. When the comet is the farthest to the sun, its total energy is potential energy and zero kinetic energy so total energy is equal to potential energy.
There is a change in the positions of the comets in the orbit that's why there is change in the kinetic and potential energy at different different points.
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