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Unit 2
| Term | Definition |
|---|---|
| Work | the use of force or mental effort |
| Energy | the ability to apply force to cause movement in the direction of the force |
| power | the rate at which work is done |
| Kinetic energy | is 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 |
| mechanical efficency | a 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 pint in 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 |
| incline plane | a simple machine that is a straight, slanted surface |
Created by:
18ukos0530
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