Final answer:
The law of conservation of energy states that the total energy in a system remains constant. Energy can be transferred from one system to another or change form, but the total amount of energy remains the same.
Step-by-step explanation:
The law of conservation of energy states that the total energy in a system remains constant. Energy can be transferred from one system to another or change form, but the total amount of energy remains the same. For example, when a ball is raised to a certain height, it gains potential energy. As the ball falls, the potential energy is converted to kinetic energy. The sum of the potential and kinetic energy remains constant throughout the process.