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# 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 are not 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 it is gravity
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 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 solid surface slides over another
unbalanced force forces that cause an objects velocity to change
air resistance the fluid friction experienced by objects falling through air
gravity the force that pulls objects towards each other
weight the measure of gravity on an object
fluid friction friction that occurs when an object moves through a fluid
inertia the tendency of an object to resist any change in its motion
satellite an object that orbits around another object in space
momentum an objects mass
friction the force one surface exerts on another when they rub together
projectile an object that is thrown
Created by: ryan suliafu