Which of the following is/are true about energy?
A a small amount of energy is usually destroyed when energy is changed from kinetic to potential energy.
B falling objects have kinetic energy
C kinetic energy can be converted into potential energy but potential energy can not be converted back into kinetic energy
D all of the above
E none of the above
HELP!!

Question

Which of the following is/are true about energy? 
A a small amount of energy is usually destroyed when energy is changed from kinetic to potential energy.
B falling objects have kinetic energy 
C kinetic energy can be converted into potential energy but potential energy can not be converted back into kinetic energy 
D all of the above 
E none of the above 
HELP!!

cuanchi · Answer

According to the second law of Thermodynamics energy can not be created neither destroyed.

when one object is falling is converting potential energy into kinetic energy

You can always convert from one kind of energy to another kind of energy