# Shared Flashcard Set

## Details

Motion
Motion Vocab
43
Physics
10/07/2010

Term
 Inertia
Definition
 The property of things to remain at rest, and in motion if in motion.
Term
 Mass
Definition
 The quantity of matter in object. Measures inertia.
Term
 Speed
Definition
 The distance traveled per time.
Term
 Velocity
Definition
 The speed of an object and specifications of its direction of motion.
Term
 Vector Quantity
Definition
 The quantity that specifies direction as well as magnitude.
Term
 Newton's FIRST Law
Definition
 Every object continues in a state of rest, or in a state of motion in a straight line at a constant speed, unless it is compelled to change that state by forces exerted upon it.
Term
 Force
Definition
 Push or pull.
Term
 Newton
Definition
 The scientific unit of force.
Term
 Equilibrium Rule
Definition
 EF=0
Term
 Support Vector
Definition
 The force that supports an object against gravity.
Term
 Acceleration
Definition
 The rate at which velocity changes with time, the change may be in magnitude or direction or both.
Term
 Inertia
Definition
 The property of things to resist changes in motion.
Term
 Inversely
Definition
 When two values change in opposite directions, so that if one increases and the either decrease by the same amount, they are said to be inversely proportional to each other.
Term
 Volume
Definition
 The quantity of space an object occupies.
Term
 Weight
Definition
 The force due to gravity on an object.
Term
 Kilogram
Definition
 The fundamental unit of mass.
Term
 Newton's SECOND Law
Definition
 The acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and is inversely proportional to the mass of an object.
Term
 Friction
Definition
 The resistive force that opposes the motion or attempt motion of an object past another with which it is in contact or through a fluid.
Term
 Free Fall
Definition
 Motion under the influence of gravitational pull only.
Term
 Air Drag
Definition
 Frictional resistance due to motion through the air.
Term
 Terminal Speed
Definition
 The speed at which the acceleration of a falling object terminates because air resistance balances its weight.
Term
 Terminal Velocity
Definition
 Terminal speed with direction of motion.
Term
 Interaction
Definition
 Mutual action between objects where each object exerts equal ad opposite force on the other.
Term
 Force Pair
Definition
 The action and reaction pair of forces that occurs in an interaction.
Term
 Newton's THIRD Law
Definition
 For every action there is an opposite and equal reaction.
Term
 Newton's FIRST Law is often called the law of :
Definition
 Inertia
Term
 Newton's SECOND Law highlights the concepts of:
Definition
 Acceleration
Term
 Newton's THIRD Law is the law of : and :
Definition
 Action force and reaction force
Term
 What's the difference of speed and velocity?
Definition
 Speed is the rate of motion WITHOUT direction, velocity is the rate of motion WITH a direction.
Term
 What is the name of the force when a piece of rope is pulled in opposite directions?
Definition
 Tension
Term
 What were the two main classifications of motion in Aristotle's view of nature?
Definition
 Violent, natural
Term
 Did Aristotle believe that forces are necessary to keep moving objects moving, or did he believe that,once moving, they'd move of themselves?
Definition
 Forces necessary
Term
 What two main ideas of Aristotle did Galileo discredit?
Definition
 Falling objects, force and movement.
Term
 Which dominated Galileo's way of extending knowledge-philosophical discussion or experiment?
Definition
 Experiment
Term
 What is the name of the property of objects to maintain their states of motion?
Definition
 Inertia
Term
 Which depends on gravity-weight or mass?
Definition
 Weight
Term
Definition
 Weight less on moon, mass the same in both places
Term
 What are the units of measurement for weight and for mass?
Definition
 Weight – lbs, or newtons. Mass - kilograms
Term
 What are the units of measurement for weight and for mass?
Definition
 Weight – lbs, or newtons. Mass - kilograms
Term
 What two quantities are necessary to determine a vector quantity?
Definition
 Magnitude and direction
Term
 What does EF = 0 mean?
Definition
 Mechanical equilibrium, net force is zero
Term
 Why is the support force on an object often called the normal force?
Definition
 Because it is perpendicular to the surface.
Term
 What is the relationship between mass and inertia?
Definition
 Mass measures inertia. Greater the mass, greater the inertia.
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