Page 11 - Grab Me SPM Add Mathematics Form 4,5

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Geometry
CHAPTER 8 VECTORS

8.1 Vectors
Scalar quantity Vector quantity
A quantity that has magnitude. A quantity that has magnitude and direction.
Example: Distance, speed, mass and height Example: Velocity and weight
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• The vector notation is AB or a with magnitude • If a = b, then |a| = |b| and the directions for both
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vectors are the same.
|AB| or |a|. ©PAN ASIA PUBLICATIONS
~ → → → →
→ B • AB = lPQ Í AB is parallel to PQ where l is a
AB or a constant.
~ ➤ → →
• Points A, B and C are collinear if AB = lBC,
A → → → →
→ → AB = bAC, AC = mBC and there is a common
• Vector BA is a negative vector of vector AB, point.
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that is, – AB = BA = –a and |– AB| = |AB| but both • Given a and b are two non-zero vectors and are
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are moving in the opposite direction. not parallel.
• Zero vectors, 0 has zero magnitude and no If ha = kb, then h = k = 0.
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direction. ~ ~
Ch 8_Grab Me SPM AddMaths F4.indd 86 26/04/2022 9:16 AM