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Forces and Energy/2/

Forces and Energy Ch.2, Lessons 1-5

TermDefinition
Force A push or pull exerted on an object.
Newton A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second.
Net force The overall force on an object when all the individual forces acting on it are added together.
Friction The forces that two surfaces exert on each other when they rub against each other.
Sliding friction Friction that occurs when one solid surface slides over another.
Static friction Friction that acts between objects that are not moving.
Fluid friction Friction that occurs as an object moves through a fluid.
Rolling friction Friction that occurs when an object rolls over a surface.
Gravity The attractive force between objects; the force that moves objects downhill.
Mass The amount of matter in an object.
Weight A measure of the force of gravity acting on an object.
Inertia The tendency of an object to resist a change in motion.
Momentum The product of an object's mass and velocity.
Law of conservation of momentum The rule that in the absence of outside forces the total momentum of objects that interact does not change.
Free fall The motion of a falling object when the only force acting on it is gravity.
Satellite Any object that orbits around another object in space.
Centripetal force A force that causes an object to move in a circle.
Created by: ggarcia489
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