# Shared Flashcard Set

## Details

chapter 12
vocab
24
Physics
03/22/2012

Term
 newton's first law
Definition
 an object at rest remains at rest and an object in motion maintains its velocity unless it experiences a net force
Term
 inertia
Definition
 tendency of an object to resist a change in motion unless an outside force acts on the object
Term
 newtons second law
Definition
 the unbalanced force acting on an object equals the objects mass times it acceleration
Term
 newtons second law
Definition
 net force = mass x acceleration
Term
 newtons 2nd law SI unit
Definition
 (N)
Term
 pound
Definition
 (ib) unit for force
Term
 newtons second law
Definition
 the acceleration of an object is directly proportional to the net force on the object and inversely proportional to object's mass
Term
 newtons second law equation
Definition
 acceleration= netfore/mass
Term
 weight
Definition
 a measure of the gravitaional force extended on an object
Term
 weight equation
Definition
 weight= mass x free fall acceleration
Term
 law of universal gravitaion
Definition
 all objects in the universe attract each other through the force of gravity
Term
 uiversal gravitation equation
Definition
 f=g m1m2/d2
Term
 free fall
Definition
 the motion of a body when only the force of gravity is acting on a body
Term
 terminal velocity
Definition
 the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
Term
 projectile motion
Definition
 the curved path that an object follows when thrown, launched or otherwise projected bear the surface of earth
Term
 newtons third law
Definition
 for every action force, there is an equal and opposite reaction force
Term
 action force
Definition
 the force exerted on an object
Term
 reaction force
Definition
 the force that is given
Term
 momentum
Definition
 a quanitity defined as the product of the mass and velocity of an object
Term
 momentum equation
Definition
 momrntum= mass x velocity
Term
 momentum SI units
Definition
 (kg.m/s)
Term
 law of conservation of momentum
Definition
 the total amount of momentum in an isolated system is conserved
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