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Unit 2 Energy
Science
| Term | Definition |
|---|---|
| work | the use of force to move an object some distance it the direction of the force. |
| Energy | the ability to work |
| power | the rate at witch work is done |
| kinetic energy | the energy of a motion |
| potential energy | the energy an object has because of its position, condition, or chemical composition |
| mechanical energy | the energy an object has due to its motion, or position |
| machine | a device that helps people do work by changing the way its done |
| mechanical advantage | the number of times a machine multiplies the the force |
| mechanicaleffiency | the comparison of a machines work |
| lever | a machine that has a bar that pivots at a fixed point |
| fulcrum | the fixed point |
| wheel and axle | an axle attached to a wheel |
| pulley | grooved wheel with a cable |
| inclined plane |