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# Forces

### Chapter 10 forces

TermDefinition
centripetal force a force that causes an object to move in a circle.
rolling friction friction that occurs when an object rolls over a surface
newton the SI unit used for the magnitude or strength of a force
force a push or pull exerted on an object
static friction friction that acts on objects that arent moving
compression an elastic force that squeezes or pushes the molecules in matter together
balanced forces equal forces acting on an object in opposite directions
mass a measure of how much matter is in an object
free fall the motion of a falling object when the only force acting on an object is gravity.
projectile a thrown object
net force the overall force on an object when all the individual forces acting on it are added together
law of conservation of momentum the rule that in the absence of outside forces the total momentum of objects that interact does not change
tension an elastic force that stretches or pulls on the molecules in matter
sliding friction friction that occurs when one object slides over another
unbalanced forces forces that cause an objects velocity to change
air resistance the fluid friction experienced by objects falling through the air
gravity the force that pulls objects towards eachother
weight a measure of the amount of gravity on an object
fluid friction friction that occurs as an object moves through a fluid
inertia the tendency of an object to resist any change in its motion
satellite any objects that orbits around another object in space
momentum the product of an objects mass and velocity
friction the force that one surface exerts on another when the two surfaces rub against each other
Created by: ngutierrez