Vectors intro
- 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
- 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