Hope this would help. :)

1. Listed below are various physical quantities. Classify them into
two.
1. Acceleration
2. Time
3. Temperature
4. Velocity
5. Mass
6. Distance
7. Pressure
8. Force
9. Density

2. What did you consider in
classifying the given
quantities?

3. 1st possible answer
Fundamental Derived
2. Time 1. Acceleration
3. Temperature 4. Velocity
5. Mass 7. Pressure
6. Distance 8. Force
9. Density

4. Correct Answer
Scalar Vector
2. Time 1. Acceleration
3. Temperature 4. Velocity
5. Mass 7. Pressure
6. Distance 8. Force
9. Density

5. SCALAR AND VECTOR
QUANTITIES
VECTORS

6. I was a SCALAR until you
walked into my life. Now, I
am a VECTOR!

7. SCALAR QUANTITIES
 Comes from the Latin word “scala” meaning
steps or ladder
 Those that can be described by magnitudes
and appropriate units
 Examples: mass, temperature, speed, time,
work, energy and distance

8. VECTOR QUANTITIES
 Originates from the word “vehere” meaning to
carry
 Those that are described by magnitudes,
appropriate units and directions
 Examples: Force, displacement, velocity,
acceleration, momentum and torque

9. VECTOR REPRESENTATION
 A vector quantity is represented by an arrow
(Ex. A )
 It can also be represented by boldface type
(Ex. A)
 The tail indicates the starting point of the
vector
 The arrowhead shows direction

10. Example of Vectors
A displacement of D, of 15 km to the East
Scale: 1cm: 3km
3km 6km 9km 12km 15km

11. Example #2
Scale: 1cm: 10 units

12. Practice Exercise
40 newtons SE
15 m/s 25 degrees SW
120 km E 35 degrees S

13. Activity
Think-pair-share
Represent the following vectors graphically: scale
(1unit = 20 units)
 100 N, 25º N of E
 50 m, south
 80 m/s, 60º W of N
 110 N, 35º S of W
 90 m/s², 30º S of E

14. Generalization
1. What are vectors?
2. What are the important parts of a
vector arrow?
3. How are vectors represented?

15. Homework
Bring the following:
1. Ruler
2. Protractor
3. Graphing paper

16. END