# Shared Flashcard Set

## Details

physics semester exam terms
semester exam terms
24
Physics
12/15/2008

Term
 physics
Definition
 study of the world
Term
 dimensional analysis
Definition
 changing the units
Term
 accuracy
Definition
 describes how well the result of a measure agrees with the real value
Term
 precision
Definition
 degree of exactness of a measurement
Term
 motion diagram
Definition
 series of images showing the position of an object at equal time intervals
Term
 position
Definition
 seperation between an object and the origin
Term
 distance
Definition
 the length of how far an object is from the origin
Term
 vector
Definition
 quantity that has both magnitude and direction (position)
Term
 resultant
Definition
 representation of sum of vectors
Term
 time interval
Definition
 the difference between the initial time and final time
Term
 displacement
Definition
 change of position during the time interval
Term
 average speed
Definition
 the absolute value of the average velocity
Term
 acceleration
Definition
 the rate at which an object's velocity changes
Term
 Newton's 1st law
Definition
 the tendency of an object to resist change (law of inertia)
Term
 Newton's 2nd law
Definition
 acceleration of object is equl to sum of forces on object divided by mass of object (a=Fnet/m)
Term
 Newton's 3rd law
Definition
 for every action there is an equal and opposite reaction (Fa on b=-Fb on a)
Term
 inertia
Definition
 tendency of an object to resist change
Term
 equilibrium
Definition
 occurs when the net force of an object is zero
Term
 interaction pair
Definition
 two forces that are opposite in direction and have equal magnitude. It is also known as a "action-reaction" pair
Term
 vector resolution
Definition
 process of breaking a vector into its components
Term
 projectile
Definition
 an object shot in the air
Term
 trajectory
Definition
 path an object takes in the air
Term
 uniform circular motion
Definition
 the movemnet of an object at a constant speed around a circle with a fixed radius
Term
 centripetal force
Definition
 the net force acting toward the center of the circle
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