1. Imagine:
 Looking for a friend who is
sick whose house is 5
kilometers away from the
school…
 Search for your lost brother
or sister to unknown place 4
kilometers from the market…
 Listen to the radio on the
weather forecast of the
coming typhoon but was not
2. SCALARS
versus
VECTORS
To which
way will he
pass in
order to
catch up
3. In Physics, everything must be
specified. Each quantities must be
described according to its
characteristics and behavior.
One of which is through directions.
Considered the example of a moving
typhoon and a tornado…
A typhoon or a tornado is
unpredictable in nature. They should
be monitored every now and then in
4. What really happened during the
typhoon “FRANK”?
FRA
NK
Weather
forecast by
PAGASA is
very
important in
cases like
this, since it
serves as
the eye of
the public to
5. SCALARS and VECTORS
How important are the directions?
To best understand this, let’s
associate direction to scalars and
vectors. With this, we would know if to
what quantity it is very important.
“What Scalars and Vectors?”
Scalars are quantities having
numerical values but do not need to
be specified it its movement to where
it is headed to or located.
6. SCALARS and VECTORS
SCALARSSCALARS VECTORSVECTORS
Length, Distance,Length, Distance,
Speed, Time,Speed, Time,
Area, Volume,Area, Volume,
Temperature,Temperature,
Mass, Amount ofMass, Amount of
Mater, Intensity,Mater, Intensity,
and many moreand many more
Displacement,Displacement,
Velocity,Velocity,
Acceleration,Acceleration,
Force, Work,Force, Work,
Weight, Pressure,Weight, Pressure,
and many moreand many more
especially thoseespecially those
These are the common examples of
scalars and vectors:
7. Directions in VECTORS
Basically, there are
four (4) known
directions: They
are:
1. NORTH
2. SOUTH
3. EAST
4. WEST
Four (4) other
directions were
base on the
known directions.
These other
8. SCALARS and VECTORS
NW
SW
NE
SE
W E
N
S
9. SCALARS and VECTORS
Scalars can be
represented as:
Vectors can be
represented as:
Length of the line is the
magnitudewith no direction.
Length of the line is the
magnitudeand arrowhead points
the direction.
10. SCALARS and VECTORS
Vectors can also be plotted in a
Cartesian coordinate system; or
simply known as x – y coordinate
system.
y
x
Vectors
expressed in 4
or 8 directions
can also be
plotted using x
and y axis. y-
axis can be
either north or
south; x-axis
can be either
11. SCALARS and VECTORS
Vectors may exist in 2 or even more.
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