What law states that energy can neither be created nor destroyed?

The Law of Conservation of Energy is a fundamental principle in physics that asserts that energy cannot be created or destroyed in an isolated system; it can only change form. This means that the total energy of an isolated system remains constant over time. For example, when energy transforms from kinetic to potential energy (such as a swinging pendulum), the total amount of energy before and after the transformation remains unchanged.

This law has crucial implications in various fields, from engineering to biology, as it underlies the functioning of everything from mechanical systems to ecological processes. Understanding this concept helps explain processes such as energy transfer and transformation, ensuring that calculations regarding energy systems are based on a foundational principle of conservation.

The other laws mentioned, such as the Law of Thermodynamics, pertain to different aspects of energy and heat transfer. The terms "Law of Kinetics" and "Law of Motion" refer to areas focusing on the behavior of objects in motion rather than specifically addressing energy conservation.