| A | B |
| force | push or pull |
| newton | a unit used to express force |
| balanced forces | do not change the motion of an object; |
| unbalanced forces | forces not opposed by another; forces that change the motion of an object |
| magnitude | greatness in size, rank or significance |
| vector | quantity specified by magnitude and direction |
| weight | force of gravity exerted on mass |
| compression | force that squeezes something |
| net force | result of two or more forces combined |
| friction | force that prevents movement between objects |
| tension | the condition of being stretched |
| gravity | attractive force between objects relative to mass |
| proportional | having the correct relationship of size |