PHY105P Lesson 2 Flashcards
quantity can be classified based on how they are presented
physical quantities
Types of physical quantities
scalar quantity
vector quantity
can be described by a single number. has magnitude (size or quantity) but no direction.
scalar quantity
deals inherently with both magnitude and direction
vector quantity
describes the quantity or the size of the physical quantity. A number assigned to determine quantity
magnitude
describe how the vector is oriented relative to a reference point. Number that gives which way the vector will go
direction
are represented by a single letter with an arrow above them
vectors
shortest distance from two points
displacement
expressed as an angle of rotation either from north, south, east west
by default, angles are measured from the east direction
direction of the vector
two vectors are considered equal if their magnitudes and direction are the same
equality of two vectors
if two or more vectors are pointing in the same direction
parallel vectors
when two vectors have opposite directions (180 degrees apart) but have the same magnitude
negative vectors/antiparallel
the total displacement
resultant (R)