Fundamental Concepts Flashcards
Is a physical science which deals with
bodies at rest or motion under the action of forces.
Mechanics
Used to locate the position of a point in space and describe its size.
Length
Definition of an event requires specification of the time and position
at which it occurred.
Time
Used to characterize and compare bodies. It is a measure of quantity
of matter.
Mass
Represents the action of one body on another. Is characterized by its point of application, magnitude, and direction.
Force
If the resultant force on a
particle is zero, the particle will remain at rest or continue to move in a straight line.
Newton’s First Law
A particle will have an
acceleration proportional to a nonzero resultant applied force.
Newton’s Second Law
The forces of action and
reaction between two particles have the same magnitude and line of action with opposite sense.
Newton’s Third Law
Two particles are attracted with equal and opposite forces.
Newton’s Law of Gravitation
Length, time, mass,
and force.
Kinetic Units
The basic units are length, time, and
mass which are arbitrarily defined as the meter (m), second (s), and kilogram (kg). Force is the derived unit F=ma.
International System of Units (SI)
The basic units are length, time, and
force which are arbitrarily defined as the foot (ft), second (s), and pound (lb). Mass is the derived unit, m=F/a
U.S. Customary Units
Is a multi-step process that involves
multiplication or division by a numerical factor, selection of
the correct number of significant digits, and rounding.
Conversion
Used to define size of very large or very small numerical
quantities.
Prefixes