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EA Physics Unit 2

One-Dimensional Motion

TermDefinition
frame of reference A system for specifying the precise location of objects in space and time
displacement The net change in position of an object including direction (as the crow flies)
distance The total path length traveled
average velocity The total displacement divided by the time interval during which the displacement occurred. A vector quantity.
average speed The total distance divided by the time interval during which the distance was traveled. A scalar quantity.
constant A value that does not change
instantaneous velocity The velocity of an object at some instant or at a specific point in the object's path
acceleration The rate at which velocity changes over time. Change in motion.
magnitude The amount of something (without direction). How big, fast, long, strong something is, etc.
free fall The motion of an object when only gravity is acting on it.
acceleration due to gravity The acceleration (change in motion) of an object due to its gravitational attraction to a large object (Earth, Moon, etc.).
constant acceleration When velocity changes by the same amount during each interval of time.
constant velocity Constant (unchanging) speed and constant (unchanging) direction.
scalar A quantity that has magnitude only (no direction).
vector A quantity that has magnitude and direction.
slope The rate of change on any graph
Acceleration slope of velocity vs. time graph (capitalize the first letter of this term)
velocity slope of position vs. time graph
Displacement area under a velocity vs. time graph (capitalize the first letter of this term)
tangent A line that ouches another at exactly one point -represents the slope of a curve at that point.
kinematics The study of motion without considering its causes
Created by: ehansen_eak12
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