Physics - Chapter 8 :)

Energy

the ability to do work

Work

the energy required to move an object; equal to the product of the force component that is parallel to the object’s displacement and the magnitude of the object’s displacement

Equilibrium Position

the position of an oscillating system at which its restoring force is zero. Also known as the rest position

Hooke’s Law

the law stating that when a spring is displaced from its equilibrium position, the spring produces a restoring force that is proportional to the spring constant and the displacement and points back toward the equilibrium position.  

Power

the rate of work done

Kinetic Energy

the energy of a body due to its motion

Work - Energy - Theorem

the theorem stating that the work done on a system by the external forces acting on its equal to the change in the system’s kinetic energy

Potential Energy

the energy of an object due to its condition or position

Law of Conservation of Energy

the law stating that energy is conserved in all natural processes; energy cannot be created nor destroyed, only transferred or transformed; also known as the first law of thermodynamics  

Conservative Force

a force in which the work done by it is independent of the path taken

Nonconservation Force

the force exerted by a surface on an object in contact with the surface. It is always perpendicular to surface

Mechanical Energy

the sum of the kinetic energy and potential energies of a system

Conservation if Mechanical Energy

the law stating that when only conservative forces act on a system, the mechanical energy of the system is conserved