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Science 8
Work, Engergy, Machines
| Term | Definition |
|---|---|
| Energy | the ability to do work |
| Joules | unit of measure of energy |
| Kinetic energy | energy associated with motion; increases as mass and velocity increase |
| Mechanical energy | Potential energy + Kinetic energy |
| Potential energy | energy at rest, stored energy |
| Gravitational Potential energy | potential energy related to height, place or position |
| Work | rate at which energy is transferred |
| Elastic Potential Energy | potential energy related to objects that can be stretched; rubber bands, springs, bow |
| Newton | unit of measure of work |
| Power | rate at which energy is transferred; work/time |
| Watt | unit of measure of power |
| Force x Distance | work |
| Compound Machine | uses two or more simple machines |
| Wedge | simple machine;inclined plane that moves |