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Friction and force

science test on friction and force

QuestionAnswer
force a push or a pull
balanced forces forces on an object that cause the net force to be zero... dont cause a change in motion
exerted push or pulling on an object
friction a force that opposes motion between two surfaces that are touching
fluid friction any friction involving air, liquids, and gases
lubricant a substance that reduces friction; such as oil
net force the force that results from combining all the force exerted on an object
Newtons the SI unit of force
rolling friction friction involving anything with wheels
static friction when you push or pull an object and it does not move
sliding friction Anything like sledding or brakes on a bike that makes friction cause it to stop moveing
unbalanced force forces on an object that cause the net force to be other than zero; this causes a change in motion or acceleration
under what conditions does movement occur? when the force is unbalanced
increase friction? rougher surface
decrease friction? lubricant, or smoothen the surface
what effect does mass hav on friction? the more mass the more friction
Most kind of friction? Sliding
Least kind of friction? fluid
Created by: bigmac23
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