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# Force, Friction

TermDefinition
Force A push or pull exerted on an object
Newton A unit of measure that equals the force Required to accelerate 1 kilogram of mass at 1 meter per second per second
Net Force The overall force on an object when all the individual forces acting on it are added together.
Unbalanced Force Forces that produce a nonzero net force, which changes an object's motion
Balanced Force Equal forces acting on an object in opposite directions
Friction The force that one surface exerts on another when the two surfaces rub against each other
Static friction Friction that acts on objects that are not moving
Sliding Friction Friction that occurs when one solid surface slides over another
Rolling friction Friction that occurs when an object rolls over a surface
Fluid Friction Friction that occurs as an object moves through a fluid
Gravity The force that pulls objects toward each other
Mass The amount of matter in an object
Weight The force of gravity on and object at the surface of a planet
Free Fall The motion of a falling object when the only force acting on it is gravity
Air Resistance The fluid friction experienced by objects falling through the air
Terminal Velocity The greatest velocity a falling object can achieve
Created by: lyly12