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# Newton's 2nd Law

### Mr. Lang's Physics A

TermDefinition
Acceleration change in velocity (speed up, slow down, or turn) equation:(Velocity/time) & (vector quantity)
Net Force the total of all forces acting on an object (Vector quantity)
Directly Proportional relationship between two variables that change by the same factor (3A = 3B.. or 1/2A = 1/2B)
magnitude The "SIZE" of a quantity
Inversely Proportional relationship between two variable change by opposite factors (3A = 1/3B or 1/4A = 4B)
mass amount of matter in an object (scalar quantity)
Force push or pull (vector quantity)
weight a common force that if caused by gravity (vector)
Vector quantity a quantity that has both magnitude and direction (direction = east, up, degrees, +/-)
scalar quantity a quantity that has only magnitude
speed simply how fast (scalar quantity)
velocity how fast in a specific direction (vector quantity)
Created by: Langerphysics