Question

Which statement is true about the law of conservation of energy for an object released from a certain height above the ground?
A. In the absence of any external forces and at any point, the kinetic energy and the potential energy are always equal.
B. In the absence of any external forces and at any point, the kinetic energy is always greater than the potential energy.
C. In the absence of external forces and at any point, the potential energy is always greater than the kinetic energy.
D. In the absence of external forces and at any point, the sum of the kinetic energy and the potential energy is always constant.

Answer 1

Answer:

Conservation of energy just mean that the total energy is unchanged

Explanation:

Energy is made of potential and kinetic, so if the total is unchanged , that means the sum of them is unchanged, which is D.

Correct Answer is: D