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Force & Motion
Unit Vocabulary Terms
13
Physics
7th Grade
10/21/2009

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Term
VELOCITY
Definition
Speed in a given direction.
Term
SPEED
Definition
The distance an object travels in a unit of time. Ex. Miles per hour.
Term
ACCELERATION
Definition
The rate at which velocity changes.
Term
MOMENTUM
Definition
Product of and object's Mass x Velocity
Term
WORK
Definition
The product of Force x Distance
Term
LEVER
Definition
Rigid bar that is free to pivot around a fixed point (See Saw) In the human, arm or leg.
Term
POTENTIAL ENERGY
Definition
Stored energy. Example, a rock at the top of a hill.
Term
FORCE
Definition
A push or pull exerted on an object.
Term
ENERGY
Definition
The ability to do work.
Term
MOTION
Definition
When one object's distance from another object changes.
Term
UNBALANCED FORCE
Definition
A situation where one force applied on an object is greater than another force.
Term
BALANCED FORCE
Definition
Situation when two opposite forces applied to an object are equal.
Term
KINETIC ENERGY
Definition
Energy an object has because of its motion. The energy of motion.
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