| A | B |
|---|
| an object's change in position relative to a reference point | motion |
| the distance traveled divided by the time interval during which the motion occurred | speed |
| the speed of an object in a particular direction | velocity |
| the rate at which velocity changes over time; and object accelerates if its speed, direction, or both change | acceleration |
| push or pull | force |
| the SI unit for force | newton |
| the combination of all of the forces acting on an object | net force |
| a resistance caused by force and microscopic hills and valleys | friction |
| friction while not moving | static friction |
| friction while moving | kinetic friction |
| a force of attraction between objects that is due to their masses | gravity |
| total distance divided by total time | speed formula |
| 12 N - 10 N = 2 N right | net force formula |
| describes the relationships between gravitational force, mass, and distance | law of gravitational force |
| when the forces on an object produce a net force of 0 N | balanced force |
| when the forces on an object produce a net force different than 0 N | unbalanced force |
| the measure of the amount of gravitiational force on an object | weight |
| the distance traveled by and object divided by the time taken to travel that distance | speed |
| oil, grease, wax | lubricants |
| reason for friction | force and microscopic hills and valleys |
