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Friction and Gravity

Friction The force that one surface exerts on another when they rub against each other
Rolling Friction The kind of friction that results when a wheel turns on a surface
Sliding Friction The kind of friction that results when you rub sandpaper against wood
Fluid Friction The kind of friction that exists between oil and a door hinge
Weight A measure of the force of gravity on an object
Free Fall The state that exists when the only force acting on an object is gravity
Gravity The force that accelerates objects towards Earth
Terminal Velocity A falling object reaches this when forces of gravity and air resistance are balanced
Air Resistance The kind of friction that slows a falling object
Created by: Smith3795