| Term 
 | Definition 
 
        | The cause of an acceleration, or the change in an object's velocity. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Force that arises from the physical contact of two objects. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Force that can exist between objects, even in the absence of physical contact between the objects. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | A diagram of the objects involved in a situation and the forces exerted on ther objects. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The tendency of an object to maintain its state of motion. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The total force resulting from a combination of external forces on an object; sometimes called the resultant force. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The state in which there is no change in a body's motion. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | A pair of simultaneous equal but opposite forces resulting from the interaction of two objects. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The magnitude of the force of gravity acting on an object. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | A force exerted by one object on another in a direction perpendicular to the surface or contact. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The resistive force that opposes the relative motion of two contacting surfaces that are at rest with respect to one another. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The resistive force that oposes the relative motion of two contacting surfaces that are moving past one another. |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | The ratio of the force of friction to the normal force acting between two objects. |  | 
        |  |