# Shared Flashcard Set

## Details

Physics
Chapter Four Vocab
22
Physics
10/26/2006

Term
 force
Definition
 push or pull on an object
Term
 contact force
Definition
 force that arises from touching b/t two objects
Term
 non contact force
Definition
 force originating without the touching b/t two objects, such as gravitational force
Term
 mass
Definition
 an amount of matter
Term
 Newton's first law
Definition
 an object will maintain its inertia unless acted upon by an outside force
Term
 inertia
Definition
 object's tendency to remain continuously at rest or continuously in motion
Term
 inertial reference frame
Definition
 area surrounding an object which allows Newton's first law to be valid
Term
 Newton's second law
Definition
 a net force acted upon an object will cause that object to accelerate
Term
 free body diagram
Definition
 a vector diagram that shows forces acting on an object
Term
 Newton's third law
Definition
 when an object exerts force onto another object, the 2nd object exerts a force of equal magnitude but in the opposite direction
Term
 fundamental forces
Definition
 gravitational forcestrong nuclear forceelectroweak force
Term
 gravitational force
Definition
 force acting on an object due to the gravitational attraction b/t the object and the planet
Term
 Newton's law of universal gravitaiton
Definition
 attractive force b/t any two bodies tahat is directly proportional to mass and inversely proportional to the distance b/t the two bodies
Term
 normal force
Definition
 perpendicular force exerted by any surave in contact with an object
Term
 apparent force
Definition
 the force exerted by an object in an accelerated frame of reference
Term
 friction
Definition
 force that opposes motion due to imperfections b/t any surface and any object
Term
 maximum static frictional force
Definition
 the greatest friction a surface can present, just at the point of constant motion
Term
 kinetic friction force
Definition
 the amount of friction which must be overcome in order to maintain motion
Term
 tension
Definition
 name for a force usually associated w/ ropes or cables acting on an object
Term
 weight
Definition
 gravitational force due to earth
Term
 lift
Definition
 support force acting on an air born object
Term
 thrust
Definition
 force created by an engine in an airborn object
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