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Forces

TermDefinition
Force A push or a pull
Newton The SI unit for the magnitude or strength of a force
Net Force The combination of all forces acting on an object
Unbalanced Forces Forces that cause an object’s velocity to change.
Balanced Forces Equal forces acting on an object in opposite directions.
Friction A force that two surfaces exert on eachother when they rub against each other.
Static Friction The friction that acts on objects that are not moving.
Sliding Friction Friction that occurs when two solid surfaces slide over each other.
Rolling Friction Friction that occurs when an object rolls across a surface.
Fluid Friction Friction that occurs when a solid object moves through a fluid.
Gravity 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 acting on an object is gravity.
Air Resistance A type of fluid friction that acts on objects falling through the air.
Projectile An object that is thrown.
Compression An elastic force that squeezes or pushes matter together.
Tension An elastic force that stretches or pulls matter.
Inertia The tendency of an object to resist a change in motion.
Momentum A characteristic of a moving object that depends both on mass and the velocity of the object.
Law of Conservation of Momentum States that in the absence of outside forces, the total momentum of objects that interact don’t change.
Satellite Any object that orbits another object in space.
Centripetal Force Any force that causes an object to move in a circular path.
Created by: bklemer