The document defines scalar and vector quantities in physics. Scalars only have magnitude, while vectors have both magnitude and direction. Examples are given of scalar quantities like speed and distance, and vector quantities like velocity and displacement that have both magnitude and direction. Vectors are represented by bold symbols with arrows above to indicate direction, and are drawn as arrows to scale. The document also explains how to add and subtract vectors by drawing them head to tail.

1. VECTORS

2. SCALAR
A SCALAR quantity
is any quantity in
physics that has
MAGNITUDE ONLY
Number value
with units
Scalar
Example Magnitude
Speed 35 m/s
Distance 25 meters
Age 16 years

3. VECTOR
A VECTOR
quantity
is any quantity in
physics that has
BOTH
MAGNITUDE
and DIRECTION
Vector
Example
Magnitude and
Direction
Velocity 35 m/s, North
Acceleration 10 m/s2, South
Displacement 20 m, East

4. Vector quantities can be
identified by bold type
with an arrow above the
symbol.
V = 23 m/s NE

5. Vectors are represented
by drawing arrows

6. The length and direction
of a vector should be
drawn to a reasonable
scale size and show its
magnitude
20 km
10 km

7. VECTOR APPLICATION
•ADDITION: When two (2) vectors point
in the SAME direction, simply add them
together.
•When vectors are added together they
should be drawn head to tail to determine
the resultant or sum vector.
•The resultant goes from tail of A to head
of B.

8. •VECTOR APPLICATION
SUBTRACTION: When
two (2) vectors point in
the OPPOSITE
direction,
simply subtract them.