| A | B |
|---|
| Attraction | A term used to describe the magnetic force exerted by oppositely charged objects or to describe the gravitational force that pulls objects toward each other |
| Balanced forces | Forces that are equal in size but opposite in direction. See also force and unbalanced forces |
| Force | A push or a pull that one object exerts on another object with or without contact (e.g., friction, gravity) |
| Friction | A force that opposes motion through direct contact |
| Mass | The amount of matter a substance or object has |
| Repel | To force away or apart |
| Speed | The distance traveled by an object in a given amount of time |
| Texture | A physical property of a solid used to describe its surface |
| Unbalanced forces | Forces that are unequal in size and may or may not be opposite in direction. See also balanced forces and force |
| Weight | A measure of the force of gravity on an object |
| Gravity | is the force of attraction between any two objects |
