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Forces

TermDefinition
Friction Is a force that two surfaces exert on each other when they rub against each other
Static Friction The friction that acts on objects that are not moving
Sliding Friction Occurs when two solid surfaces slide over each other
Rolling Friction When an object rolls across a surface
Fluid Friction Occurs when a solid object moves through a fluid
Gravity Is a force that pulls objects toward each other
Mass The measure of the amount of matter in an object
Weight The gravitational force exerted on a person or object at the surface of a planet
Free Fall When the only force is acting on an object is gravity, the object is said to be in free fall
Air Resistance Acts on objects falling through air
Projectile An object that is thrown
Compression Is an elastic force that squeezes or pushes matter together
Tension An elastic force that stretches or pulls matter
Created by: Buttercup133