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Motion,Force, and Energy
Vocabulary
15
Science
8th Grade
02/03/2012

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Cards

Term
Motion
Definition
When an objects distance is changing from another object.
Term
Reference Point
Definition
Place or object used to compare to another object to tell if an object is in motion.
Term
Meter
Definition
The basic unit to describe distance an object has moved.
Term
Speed
Definition
The distance an object has moved in a certain amount of time.
Term
Constant Speed
Definition
When the speed of an object does not change.
Term
Average Speed
Definition
Find this by divide the total distance by the total time the object was in motion.
Term
Velocity
Definition
When you know the objects speed and the direction it is traveling.
Term
Acceleration
Definition
Increasing speed, decreasing speed, or changing direction are all examples.
Term
Force
Definition
It is either a push or a pull.
Term
Unbalanced force
Definition
This is what cause an object to move in a certain direction.
Term
Balanced Forces
Definition
They will not change an objects motion.
Term
Net Force
Definition
Overall force after all the forces are added together.
Term
Inertia
Definition
The tendency of an object to resist change in its motion.
Term
Newton's first law of motion.
Definition
Object at rest will stay at rest. An object in motion will stay in motion, unless acted on by an outside force.
Term
Mass
Definition
Amount of matter in an object.
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