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Unit 5: Force and Motion
Vocabulary for Force and Motion
11
Science
8th Grade
12/01/2015

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Term
Motion
Definition
Describes the movement or lack of movement of an object.
Term
Force
Definition
A push or a pull exerted on an object.

Force= mass X acceleration
Term
Balanced and Unbalanced Force
Definition
When forced are balanced, there is no change in the motion of an object.

When forces are unbalanced, there will be a change in the motion of the object.
Term
Net Force
Definition
The sum of all forces acting on an object.
Term
Mass
Definition
The amount of matter in an object.
Term
Inertia
Definition
A natural tendency of objects to keep on doing what they're doing.
Term
Speed
Definition
The rate at which an object moves through time.

S= distance / time
Term
Velocity
Definition
An object's speed plus the direction of its motion.
Term
Acceleration
Definition
The rate of change of the velocity of an object.
Term
Gravity
Definition
The force of attraction between two objects.
Remember, anything that has mass has gravity.
Term
Newton (n)
Definition
The unit of measure for force.
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