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F&M #1-7 Vocabulary

Position (x) An object's location at any given time.
Delta Greek symbol: meaning "change in".
Distance (d) How much an object's position changes.
Reference Point A specific location used to monitor change of position.
Motion The act of changing position.
Potential Energy Energy that can be stored.
Speed (v) How far an object travels in a given amount of time.
Leg A segment of a complex motion or trip.
Displacement The amount and DIRECTION of a change of position between an object's initial position and final position.
Velocity Change of position divided by change in time.
Acceleration (a) Change in velocity divided by a change in time.
Force A push or pull that acts on an object.
Newton Unit used to measure force, amount of force that will move 1kg of mass 1m
Net Force The total (sum) of all the forces acting on an object.
Balanced Forces Forces that cancel each other out.
Unbalanced Forces Forces that do not cancel each other out.
Friction A force that acts between two surfaces that come in contact with each other.
Sliding Friction Friction between two solid surfaces.
Rolling Friction Friction that occurs when one of the two surfaces in contact rolls.
Fluid Friction Friction that occurs when one of the two surfaces in contact is a liquid and a gas.
Free Body Diagram Diagram used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
Gravity the force due to gravitational attraction between masses.
Law of Universal Gravitation All objects in the universe are attracted to each other.
Free fall Occurs when gravity is the only force acting on a falling object.
Terminal Velocity The acceleration during free fall.
Acceleration due to gravity The acceleration during free fall.
Created by: alexandra14