The first law of thermodynamics states:

Question

Quizplus · Accepted Answer

The first law of thermodynamics, also known as the law of conservation of energy, states that the total energy in a closed system remains constant. While energy can change from one form to another, the total amount of energy in the system cannot be created or destroyed. Option A is incorrect because energy in a freefall is not lost but rather converted from potential energy to kinetic energy. Option B is incorrect because the first law of thermodynamics states that the energy in an isolated system is conserved. Option C is Newton's law of motion, which is not related to the first law of thermodynamics. Option E is an incomplete and incorrect statement about energy expenditure.

The First Law of Thermodynamics States