Final answer:
1) Mechanical Energy is the term for the combined sum of Kinetic Energy and Potential Energy in an object or system.
Step-by-step explanation:
The sum of Kinetic Energy and all forms of potential energy associated with an object or group of objects is called Mechanical Energy. Kinetic energy, which is the energy of motion, is given by the equation KE = ½mv², where 'm' is mass and 'v' is the velocity of the object. With potential energy, including gravitational potential energy, the energy is stored based on an object's position in a gravitational field. The Law of Conservation of Mechanical Energy states that in a closed system without external forces like friction or air resistance, the total mechanical energy remains constant.