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# Forces

TermDefinition
Forces a push or pull
Newton The SI unit for magnitude or strength
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 the force that one surface exerts on another when the two surfaces rub 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 fluid
Gravity the force that pulls objects toward each other
Mass a measure of how much matter is in an object
Weight a measure of the force of gravity on an object
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
Projectile an object that is thrown
Compression the part of a longitudinal wave where the particles of the medium are close together
Tension stress that stretches rock so that it becomes thinner in the middle
Inertia an object’s tendency to resist change in motion
Momentum the quantity of motion
The Law of Conservation of Momentum without outside forces, objects that interact will have the same momentum
Satellite any object that orbits another object in space
Centripetal force any force that causes an object to move in a circular motion
Created by: CharleighOchoa