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the extreme zone
forces and motion
9
Science
8th Grade
03/26/2010

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Term
force
Definition
push or pull that makes objects move or change their speed or direction.
Term
motion
Definition
change of place or position.
Term
accelerate
Definition
get faster.
Term
gravity
Definition
force that pulls all things toward earth.
Term
air resistance
Definition
force that slows down an object moving through the air.
Term
balanced forces
Definition
when forces have equal strength and work in opposite directions.
Term
constant
Definition
staying the same.
Term
ramp
Definition
sloping surface.a ramp can be used by a snow border to get air
Term
friction
Definition
force that acts between two objects sliding each other.
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