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Forces,Friction,&N L
Forces,Friction,& Newton's Laws
Term | Definition |
---|---|
force | a push or pull |
newton | SI unit for magnitude or strength |
net force | combination of all forces acting on an object |
unbalanced forces | forces causing an object to change in velocity |
balanced forces | equal forces acting on an object in oppisite directions |
friction | force that exerts when 2 surfaces rub on each other |
static friction | friction on objects that aren't moving |
sliding friction | friction on 2 solid objects sliding over each other |
rolling friction | friction on an object rolling over a surface |
fluid friction | friction on an object moving through a fluid |
gravity | force that pulls objects toward each other |
mass | amount of matter in an object |
free fall | when the only force acting on an object is gravity |
air resistance | fluid friction on an object moving though the air |
projectile | an object that is thrown |
compression | an elastic force that squeezes or pushes matter together |
tension | an elastic force that stretches or pulls matter |