| A | B |
|---|
| energy | the ability to do work or cause a change |
| potential energy | the stored energy that an object has due to its position, molecular arrangement, or chemical composition. |
| kinetic energy | the energy of motion (depends on speed and mass) |
| dissipated (waste) energy | energy that is lost (to the system) during an energy conversion |
| energy conversion | changing from one form of energy to another |
| energy efficiency | a measurement of usable energy after an energy conversion |
| Law of Conservation of Energy | Energy can neither be created nor destroyed. No matter how energy is transferred or transformed, it continues to exist in one form or another. |
| acceleration | a change in the velocity of an object due to change in speed and/or direction |
| gravitational force | the force of attraction between two objects based on their masses and the distance between them |
| friction | a force that opposes the motion of objects that touch as they move past each other |
| thermal energy | energy due to movement of particles in a substance |
| acceleration due to gravity (g) | a constant on Earth (9.8m/s/s); caused by the gravitational force of the Earth as it pulls on all particles within objects |
