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chapter 10
forces
Term | Definition |
---|---|
net force | the overall force on an object when all the individual forces acting on it are added together |
law of conservation of momentum | the rule that in the absence of outside forces the total momentum of objects that interact does not change |
tension | an elastic force that stretches or pulls on the molecules in matter |
sliding friction | friction that occurs when one solid surface slides over another |
unbalanced force | forces that cause an objects velocity to change |
air resistance | the fluid friction experienced by objects falling through air |
rolling friction | friction that occurs when an object rolls over a surface |
gravity | the force that pulls objects toward each other |
newton | the SI unit used for the magnitude, or strength, of a force |
weight | a measure of the force of gravity on an object |
force | a push or pull exerted on an object |
fluid friction | friction that occurs as an object moves through a fluid |
static friction | friction that acts on objects that are not moving |
inertia | the tendency of an object to resist any change in its motion |
compression | an elastic force that squeezes or pushes the molecules in matter together |