## Ch.5 Newton's 2nd Law Vocab

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dulci123  on October 9, 2011

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# Ch.5 Newton's 2nd Law Vocab

 Air resistanceFriction, or drag, that acts on something moving through air.
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#### Definitions

Air resistance Friction, or drag, that acts on something moving through air.
Fluid Anything that flows; in particular, any liquid or gas.
free-body diagram A diagram showing all forces acting on an object
inversely When two values change in opposite directions, so that if one is doubled the other is reduced by a half.
Newton's 2nd law The acceleration produced by a net force on a body is directly proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the body/
Pascal the SI unit of pressure, exerts a normal force of one newton per square meter
friction the force that acts to oppose motion between 2 materials in contact.
pressure force per surface arena where the force is normal to the surface.
fluid friction the resistance force of a gas or a liquid as an object passes through
Independent variable the variable you change on purpose
dependent variable the variable that responds to the independent variable
constants the variables that are not allowed to change
data table chart that you enter the IV and DV
graph a visual representation of the data enabling easier interpretation of data

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