# Shared Flashcard Set

## Details

ES 105 vocab- week 1-5
WOU ES 105 Ellingson
74
Geology
Undergraduate 1
03/19/2012

## Cards Return to Set Details

Term
 weight=
Definition
 mass x acceleration of gravity, weight=mg
Term
 Speed/Velocity=
Definition
 distance/time
Term
 acceleration=
Definition
 change in velocity/time
Term
 Equilibrium rule
Definition
 If the vector sum of all forces acting on an object is zero, then that something is mechanical equilibrium.
Term
 Newton's first law
Definition
 Every object continues in a state of rest or of uniform speed in a straight line unless acted on by a nonzero force
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 the object.a=F/m
Term
 Newton's third law
Definition
 Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first
Term
 Force
Definition
 a push or pull
Term
 inertia
Definition
 the property of all things to resist changes in motion
Term
 Aristotle, wrong teachings proven by Galileo
Definition
 heavy objects fall faster than lighter objectsmoving objects need forces to keep them moving
Term
 Mass
Definition
 quantity of matter in an object, measurement of inertia, form of energy
Term
 inertia
Definition
 sluggishness that an object exhibits in response to any effort made to start it, stop it, or change in any way its state of motion
Term
 momentum
Definition
 inertia in motion, vector quantity
Term
 vector quantity
Definition
 when something includes magnitude and direction
Term
 force
Definition
 any influence that tends to accelerate an object; a push or pull; measured in newtons (N) vector quantity
Term
 Density=
Definition
 mass/volume
Term
 F=
Definition
 ma
Term
 law of universal gravitation
Definition
 F = m m / 2 G 1 2 d
Term
 Who wrote principia?
Definition
 Sir Isaac Newton
Term
 Newton's first law of motion is also called
Definition
 The Law of Inertia
Term
 acceleration is directly proportional to
Definition
 net force (F)
Term
 acceleration is inversely proportional to
Definition
 mass (m)
Term
 Free Fall
Definition
 motion under the influence of gravity alone (no air resistance)
Term
 Acceleration of gravity
Definition
 acceleration of a freely falling object. Its value near sea level 9.81 m/s squared
Term
 Air resistance
Definition
 friction, or drag, that acts on something moving through air
Term
 Terminal Speed
Definition
 is reached when air resistance on a falling object balances the objects weight (downward force due to gravity)
Term
 Interaction
Definition
 mutual action between objects during which each object exerts an equal and opposite force on the other
Term
 Force Pair
Definition
 the action and reaction pair of forces that occur in an interaction
Term
 momentum=
Definition
 mass x velocity
Term
 Impulse=
Definition
 force x time
Term
 impulse-momentum relationship
Definition
 Impulse=change in momentum
Term
 Law of conservation of momentum
Definition
 in the absence of an external force, the momentum of a system remains unchanged
Term
 Law of Conservation of Energy
Definition
 Energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes
Term
 Energy
Definition
 property of a system that enables it to do work
Term
 Work
Definition
 product of the force and distance moved by the force
Term
 One Joule=
Definition
 one newton-meter = newton x meter
Term
 Potential energy
Definition
 the energy that matter possess due to its position-- energy that is stored and held in readiness
Term
 Gravitational potential energy
Definition
 the potential energy due to an elevated position.
Term
 Kinetic Energy
Definition
 energy of motion
Term
 Power
Definition
 the rate of doing work
Term
 one watt=
Definition
 one joule per second (J/s)
Term
 Momentum
Definition
 the mass of an object multiplied by its velocity. Inertia in motion
Term
 Acceleration
Definition
 is a change in velocity-- a change in speed, a change in direction, or both
Term
 Science
Definition
 the collective findings of human about nature, and a process of gathering and organizing knowledge about nature
Term
 Hypothesis
Definition
 an educated guess; a reasonable explanation of an observation or experimental result that is not fully accepted as factual until tested over and over again by experiment
Term
 Theory
Definition
 a synthesis of a large body of information that encompasses well-tested and verified hypothesis about a certain aspects of the natural world
Term
 Force
Definition
 simply stated, a push or pull
Term
 Inertia
Definition
 The property of things to resist changes in motion
Term
 Mass
Definition
 the quantity of matter in an object
Term
 Mass
Definition
 The measure of inertia or sluggishness that an object exhibits in response to any effort made to start it, stop it, deflect it, or change in any way its state of motion
Term
 Weight
Definition
 The force due to gravity on an object
Term
 Weight
Definition
 The force with which a body presses against a supporting surface.
Term
 Speed
Definition
 The distance traveled per time
Term
 Velocity
Definition
 The speed of an object and specification of its direction of motion
Term
 Acceleration
Definition
 The rate at which changes with time; the change in velocity may be in magnitude or direction or both
Term
 Acceleration
Definition
 usually measured in m/s2
Term
 A Newton
Definition
 The SI unit (metric unit) for force
Term
 Vector quantity
Definition
 An arrow that represents the magnitude and direction of a quantity
Term
 Free Fall
Definition
 Falling only under the influence of gravity--falling without air resistance
Term
 Terminal Speed
Definition
 The speed at which the acceleration of falling objects terminates when air resistance balances its weight
Term
 Momentum
Definition
 Inertia in motion, given by the product of the mass of an object
Term
 Impulse
Definition
 The product of the force acting on an object and the time during
Term
 Energy
Definition
 The property of a system that allows it to do work
Term
 Kinetic Energy
Definition
 Energy of motion
Term
 Potential Energy
Definition
 Energy due to position
Term
 Work
Definition
 The product of the force and the distance moved by the force
Term
 Power
Definition
 The rate of doing work
Term
 Power
Definition
 The rate at which energy is expended
Term
 Machine
Definition
 A device, such as a lever or pulley, that increase (or decreases) a force or simply changes the direction of a force
Term
 Efficiency
Definition
 The percentage of the work put into a machine that is converted into useful work output
Term
 Newton's Law 1
Definition
 Every object continues in a state of rest, or in a state of motion in a straight line at constant speed, unless acted on by a net force
Term
 Law of Conservation of Momentum
Definition
 In the absence of an external force, the momentum of a system remains unchanged. Hence, the momentum before an event involving only internal force is equal to the momentum after the event
Term
 Newton's Law 2
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 the object`
Term
 Law of Conservation of Energy
Definition
 Energy cannot be created or destroyed; but it may be transformed from one form into another, but the total amount of energy never changes
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