| A | B |
|---|
| force | push or pull on an object |
| net force | sum of all forces acting on an object |
| friction | force that opposes sliding motion of two surfaces touching |
| gravity | attractive force between two objects depending on mass & distance |
| field | range of space that has physical quantity at every point |
| weight | gravitational force exerted on an object |
| mass | amount of matter in an object |
| SI unit force | newton (N) |
