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# PS Ch. 3

TermDefinition
Newton's second law of motion States that the acceleration of an object is in the same direction as the net force on the object, and that acceleration can be calculated from the following equation:
Friction The force that opposes the sliding motion of two surfaces that are touching each other.
Static Friction is the frictional force that prevents two surfaces from sliding past each other.
Sliding Friction the force that opposes the motion of two surfaces sliding past each other.
air resistance Opposes the motion of objects that move through the air.
Gravity Is an attractive force between any two objects that depends on the masses of the objects and the distance between them.
Weight The gravitational force exerted on an object.
Centripetal Acceleration Acceleration toward the center of a curved or circular path
Centripetal Force The net force exerted toward the center of a curved path
Newton's third law of motion Describes action-reaction pairs this way: When one object exerts a force on a second object, the second one exerts a force on the first that is equal in strength and opposite in direction.
momentum The product of its mass and velocity.
Created by: airiktorrescruz