Uprak Science Math Audrey Pramesti dan Hanna Tamba

1. Vectors
Audrey Pramesti and Hanna Tamba

2. Properties
➔ Has magnitude and direction
➔ Notation of vectors
ā -ā 2ā
A B

3. Addition and Subtraction of Vectors
1. Parallelogram Method
2. Polygon method
ā ē
becomes
ā+ē
ā
ē becomes
ā+ē

4. ➔ PA=CB because PA//CB
➔ CB=a, CD=b, so CP= a+b
➔ PA=EF= a
➔ CP=DE= a+b
➔ FD=FE+ED= (-a) + (-a-b) = -2a - b
Titik P adalah titik pusat segi enam
beraturan ABC.DEF. JIka PA=a dan
CD=b, maka FD=?
E D
CF
BA
P
Answer: - 2a - b

5. OP = OA + AP
= OA + 1/3 AB
= OA + 1/3 (AO + OB)
= a + 1/3 (-a + b)
= a - 1/3 a + 1/3 b
= 2/3 a + 1/3 b
Diketahui persegi panjang OABC dan D titik
tengah OA, CD memotong diagonal AB di P. jika
OA = A dan OB = B maka OP dapat dinyatakan
sebagai...