Search
Create
Log in
Sign up
Log in
Sign up
Newton's Three Laws Vocabulary Akers
STUDY
Flashcards
Learn
Write
Spell
Test
PLAY
Match
Gravity
Vocabulary that covers the three laws of motion from an integrated science book.
Terms in this set (35)
Equilibrium Rule
∑F=0
Force
a push or pull
Inertia
the property by which things tend to remain at rest if at rest, and in motion if in motion
Net Force
the sum of all forces that act on an object
Newton
the scientific unit of force
Newton's 1st Law
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 nonzero net force
Speed
the distance traveled per time
Normal Force
the force that supports an object against gravity
Vector
a quantity that specifies direction as well as magnitude
Velocity
the speed of an object and specification of its direction of motion
Acceleration
the rate at which velocity changes with time; the change may be in magnitude or direction or both
Air Drag
frictional resistance due to motion through air
Free Fall
motion under the influence of gravitational pull only
Friction
the resistive force that opposes the motion or attempted motion of an object past another
Inversely
when two values change in opposite directions, so that if one increases and the other decreases by the same amount, they are said to be inversely proportional to each other
Kilograms
the fundamental SI units of mass. One kilogram (symbol kg) is the mass of 1 liter (L) of water at 4°C
Mass
the amount of matter in an object; the more mass an object has, the more it resists change in motion
Newton's 2nd Law
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
Terminal Speed
the speed at which the acceleration of a falling object terminates because air drag balances its weight
Terminal Velocity
terminal speed with direction of motion (down for falling objects)
Volume
the quantity of space an object occupies
Weight
the force due to gravity on an object
Newton's 3rd Law
Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. Or to put another way, "To every action there is always an opposed equal reaction."
Law of Conservation of momentum
When no external net force acts on an object or a system of objects, no change of momentum takes place. Hence, the momentum before an event involving only internal forces is equal to the momentum after the event: mv(before event)=mv(after event).
System
Any object or collection of objects being studied
Elastic collision
A collision in which colliding objects rebound without lasting deformation or the generation of heat
Inelastic collision
A collision in which colliding objects become distorted, generate heat, and possibly join together
Impulse
The product of the force action on an object and the time during which it acts. In an interaction, impulses are equal and opposite
Interaction
Mutual action between objects in which each object exerts and equal and opposite force on the other
Impulse-momentum relationship
Impulse is equal to the change in the momentum of the object that the impulse acts on. in symbol notation, Ft=change in mv
Momentum
The product of the mass of an object and its velocity
Force pair
The action and reaction pair of forces that occur in an interaction
Relative Motion
movement that depends of a reference point to measure it
Friction
the resisting force that opposes the motion or attempted motion of an object over the surface of another
Gravity
a natural phenomenon by which physical bodies attract each other with a force proportional to their masses
;