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Unit 6: Part 1 "Motion"
Flash Cards for the Unit 6 Vocabulary
12
Science
8th Grade
12/01/2010

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Term
MOTION
Definition
the state in which one object's distance from another is changing
Term
REFERENCE POINT
Definition
A place or object used for comparison to determine if an object is in motion.
Term
AVERAGE SPEED
Definition
The overall rate of speed at which an object moves. Total distance / total time.
Term
INSTANANEOUS SPEED
Definition
The speed of an object at one instant of time.
Term
VELOCITY
Definition
Speed in a given direction.
Term
SLOPE
Definition
The steepness of a line on a graph, equal to its vertical change divided by its horizontal change.
Term
ACCELERATION
Definition
The rate at which velocity changes.
Term
FORCE
Definition
A push or pull exerted on an object.
Term
NEWTON
Definition
The force needed to accelerate 1 kg of mass at 1 meter per second.
Term
NET FORCE
Definition
The overall force of an object when all other forces are added together.
Term
UNBALANCED FORCES
Definition
Forces that give a non-zero net force and cause an object to move.
Term
BALANCED FORCE
Definition
Forces that give a zero net force and cause an object to stay in place. Equal forces acting in opposite directions.
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