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15 Cards in this Set

  • Front
  • Back
motion diagram
a tool for the study of motion that uses a series of images to shoe the position of a moving object after equal time intervals
operational definition
defines a concept in terms of the procedure or operation used
particle model
a simplified version of a motion diagram in which the object in motion is replaced by a series of single points
coordinate system
a system used to describe motion that indicates where the zero point of the variable being studied is located and the direction in which the values of the variable increase.
origin
the point in a coordinate system at which the variables have a zero value
position vector
the arrow on a motion diagram that is drawn from the origin to the moving object
scalar quantity
a quantity that has only magnitude
vector quantity
a quantity that has both magnitude and a direction
displacement
the vector quantity that defines the distance and direction between two points
time interval
difference in time between two clock readings
distance
a scalar quantity that is the length, or size, of the displacement vector
average velocity
the ration of the change of position to the time interval during which that change occurred.
average speed
the ratio of total distance traveled to the time interval
instantaneous velocity
the speed and direction of an object at a particular instant in time
average acceleration
the change in average velocity divided by time