| A | B |
|---|
| matter | anything that has mass and volume |
| force | a push or pull on an object |
| friction | force that acts in the opposite direction of motion |
| inertia | tendency of an object at rest to remain at rest (Latin for "lazy") |
| newton | unit of force (1 kg x 1 m/sec/sec) |
| gravity | force of attraction between objects |
| work | force acting over a distance to move an object |
| joule | unit of work; 1 newton-meter |
| power | rate at which work is done |
| watt | unit of power; 1 joule per second |
