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PS Chp 12::Dynamics

PS Chapter 12: Dynamics Coach Leach

TermDefinition
Dynamics The branch of physics that studies forces and how they can change an object's motion.
Force A push or a pull on an object.
Contact Force A force that acts only when one object touches another.
Field Force A force that acts between objects that are not touching.
Inertia The tendency of matter to resist changes in its motion.
Law of Inertia The law that states that objects at rest remain at rest and objects in motion continue in a straight line at a constant velocity unless acted on by a net external force.
Law of Acceleration The law that states that he acceleration of an object is directly proportional to the net force acting on the object and is inversely proportional to the system's mass.
Law of Action Reaction The law that states that for every action force, there is an equal and opposite reaction force.
Friction A contact force that works against the motion of objects trying to move past each other.
Tension Force A type of contact force where an object is being stretched in opposite directions.
Normal Force The force that acts in a direction that is perpendicular to the surface where two objects make contact.
Free-Body Diagram A sketch that shows an object and the forces acting on it.
Gravity A field force that acts between the masses of any two objects.
Centripetal Force A force that accelerates an object toward the center of a circular path.
Created by: CoachLeach
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