# Shared Flashcard Set

## Details

Vocab 6(physics)
vocabulary
24
Physics
Not Applicable
11/18/2004

Term
 mechanical resonance
Definition
 the amplitude of motion is increased by the repeated application of a force when the time between the applications is equal to the period of oscillation
Term
 net force
Definition
 The vector sum of two or more forces acting on an object is
Term
 equilibrium
Definition
 when then net force on an object is zero
Term
 static friction force
Definition
 the horizontal force exerted on one surface by another when the two surfaces are not in relative motion
Term
 Newton's second law
Definition
 the acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass
Term
 apparent weight
Definition
 the force exerted by a scale on an object
Term
 contact force
Definition
 a force that acts on an object by touching it
Term
 Newton's third law
Definition
 the two forces in an interactive pair act on different objects and are equal in magnitude and opposite in direction
Term
 environment
Definition
 the world outside a system
Term
 force of gravity
Definition
 an attractive force that exists between all objects
Term
 Newton's first law
Definition
 An object that is at rest will remail at rest or an object that is moving will continue to move in a straight line with constant speed, if and only if the net force acting on the object is zero
Term
 kinetic friction force
Definition
 the horizontal force exerted on one surface by another when surfaces are in relative motion
Term
 system
Definition
 a defined object or group of objects
Term
 inertia
Definition
 the tendency of an object to resist changes in its motion
Term
 agent
Definition
 the specific identifiable cause of a force
Term
 period
Definition
 the time to repeat one complete cycle
Term
 long-range force
Definition
 a force that is exerted without contact
Term
 amplitude
Definition
 in any periodic motion, the maximum displacement from equilibrium
Term
 force
Definition
 a push or pull
Term
 interaction pair
Definition
 two forces that are in opposite directions and have equal magnitudes
Term
 free-body diagram
Definition
 a dot represents an object and arrows represent each force acting on it with their tail on the dot and their points indicating the direction of the force
Term
 simple harmonic motion
Definition
 the force that restores an object to its equilibrium position is directly proportional to its displacement
Term
 terminal velocity
Definition
 the constant velocity that a falling object reaches when the drag force equals the force of gravity
Term
 weightlessness
Definition
 when an object's apparent weight is zero
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