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unit 2 science
| 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 | a device that helps people do work by changing the way work is down |
| mechanical advantage | the number of times a machine multiplies the input force |
| mechanical efficiency | a comparison of a machine's output with the work input |
| lever | a simple machine that has a bar that pivots at a fixed point |
| fulcrum | the fixed point on 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 is made up of a grooved wheel that holds a rope or cable |
| inclined plane | a simple machine that is a straight, slanted surface |
Created by:
18richterj0615
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