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Work Energy Power
Term | Definition |
---|---|
Work | The use of force to move an object some distance in the direction of the force |
Power | The rate at which work is done |
Energy | The ability to do work |
Kinetic energy | The energy of motion |
Potential energy | The energy the object has because of its potion,condition, or chemical composition |
Mechanical energy | The energy possessed by an object due to its motion and position |
Machine | any device that helps people do work by changing the way we work |
Mechanical advantage | The number of times the machine multiplies the input force |
mechanical efficiency | An comparison of a machine's work output with the work input |
Lever | A simple machine that has a bar that pivots at a fixed point |
Fulcrum | The fixed point of a lever |
Wheel and axle | A simple machine that is made of a wheel connected to a smaller cylindrical object, the axle |
Pulley | A simple machine that has a grooved wheel that holds a rope or a cable |
Inclined Plane | A simple machine that is a straight, slanted surface |