The state in which one object's distance from another is changing.
A place or object used for comparison to determine if an object is in motion.
The basic SI unit of length.
The distance an object travels in one unit of time
Speed in a given direction.
A push or a pull exerted on an object.
The overall force on an object when all the individual forces acting on an object are added together.
A nonzero net force that changes an object's motion.
Equal forces acting on an object in opposite directions.
The force that one surface exerts on another when the two rub against each other.
The rate at which velocity changes.
The term used to describe the relationship between variables whose graph is a straight line.
The term used to describe a relationship between variables whose graph is not a straight line.