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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 |