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Chapter 5
Vocabulary
9
Science
8th Grade
11/26/2012

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Term

Motion

 

Definition
An object's change in position relative to a reference point.
Term

Speed 

 

Definition
the distance traveled divided by the time the interval during which the motion occurred
Term
Velocity
Definition
The speed of an object in a particular direction
Term

Accerleration

 

Definition
The rate at which velocity changes over time;an object accelerates if its speed, direction, or both change
Term
Force
Definition
a push or pull exerted on an object i order to change the motion of the     object; force has size and direction
Term
Newton
Definition
The SI unit for force (symbol, N)
Term
Net Force
Definition
the combination of all of the forces acting on an object
Term
Balanced Force
Definition
When the forces on an object produce a net force of 0 N, the forces are balanced.
Term
Unbalanced Force
Definition
when the net force of an object is not 0 N, the forces on the object are unbalanced.
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