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work enery and power
Unit 2 lesson 1,2, and 3
| Term | Definition |
|---|---|
| Work | The use of force to move an object some distance in the direction of the force. |
| Energy | The ability to do work |
| Power | The rate at which work is done |
| Kinetic energy | The energy of motion |
| Potential energy | The energy an object has because of its position, 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 work is done |
| Mechanical advantage | The number of times the machine multiplies the input force |
| Mechanical efficiency | A comparison of a machine's work output with the work input |
| Lever | A simple machine that has a bar that pivots at the fixed point |
| Fulcrum | A fixed point |
| 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 |
Created by:
18kellera1027
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