Introduction to vectors. Vocabulary and definitions; various ways of describing direction, geometric representation of vectors.

1. Vectors
A Sense of Direction by flickr user Scuddr

2. Vectors
Vector: A quantity that has both a magnitude and a direction.
4 Notations for Writing a Vector
(1) An arrow (2) [angle] [direction] of [direction]
• length indicates magnitude.
• tip indicates direction.
(3) [direction] [angle] [direction] (4) Bearings: Angle is always
measured clockwise from North.
Angle is always written as a three
digit number.

3. 4 Notations for Writing a Vector
(1) An arrow (2) [angle] [direction] of [direction]
• length indicates magnitude.
• tip indicates direction.
1cm = I0km
Note: All of the above examples indicate the same vector.