| Defintion | term |
| the ratio the force of friction bwteen two bodies and the force pressing them together | |
| a constant speed due to the restraining force exeted by the air through which the object is moving | |
| forces generated that are equal in magnitude but opposite in direction | |
| mass of an object determined by its monetum | |
| also known as drag, refers to the forces that oppose the motion of an object through a gas | |
| the force that we associate with nuclear decay; one of the four fundamental forces of nature | |
| the law of inertia, in the absence of a net force, a body at rest stays at rest and a body in motion stays in motion. | |
| friction that occurs when two objects are moving relative to each other or rub together | |
| any push or pull on an object | |
| the force that holds particles together in the nucleus; one of the four fundamental forces of nature | |