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# Newton's Laws

### Forces and Dynamics

Newton’s 2nd Law (Total force) = (mass of an object)(acceleration); F = ma
Force – reaction the other of the forces of interaction; distinguishes from the “partner” force acting during an interaction
Force pair when two different objects influence each other through an interaction
Interaction when a pair of objects act; one object experiences one of the forces; the other object experiences the other force
Net force the vector sum of all forces acting on an object
Newton’s 1st Law Law of inertia: an object want to continue “keep doing what it is doing”(velocity unchanged; stay at rest or continuing in a straight line); Must be acted on by a force to change velocity, called an acceleration
Newton’s 2nd Law Quantitative expression of the effect of a set of forces acting; acceleration = (net force)/(mass)
Newton’s 3rd Law when a pair of objects interact, the force on each is equal in magnitude but in opposite directions; the magnitude of the acceleration each experiences is given by Newton’s 2nd Law, depends on the individual masses
Terminal velocity the condition of the net force equal zero; when the fluid friction equals the weight of an object; zero acceleration
Force - Action Arbitrary name for one of two forces; the other is the "reaction"
Created by: brownglarry