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The vocabulary used in graphing motion.

SPEED

distance travelled per unit time

DISPLACEMENT

the act of uniform movement

SLOPE

rise over run

ACCELERATION

(physics) a rate of change of velocity

VELOCITY

speed and direction

INSTANTANEOUS SPEED

the rate at which an object is moving at a given moment in time

LINEAR GRAPH

a line graph in which the data points yield a straight line

UNIFORM MOTION

the motion of an object moving at a constant rate

POSITION

the spatial property of a place where or way in which something is situated

AVERAGE SPEED

Total distance divided by total time

ULTRASONIC MOTION DETECTOR

A device that emits an ultrasonic frequency which is reflected off nearby objects to determine the range from the sensor.

photogate timer

A device that contains a laser that as the beam is broken, it begins to count the elapsed time.

regression analysis

a mathematical approach for fitting an equation to a set of data

curve fit

The curve that is drawn on a scatter plot to show the approximate realation beween two varibles, the varible depends on the other.

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