Representing a vector

There are a number of ways of representing vector quantities. These include:

  1. Using bold print
  2. AB where an arrow above two capital letters denotes the sense of direction, where A is the starting point and B the end point of the vector
  3. AB or a i.e. a line over the top of letters
  4. a i.e. an underlined letter

1

The force of 9N at 45◦ shown in above figure may be represented as:
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2
The magnitude of the force is 0a Similarly, the velocity of 20m/s at −60◦ shown in above figure may be represented as:

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The magnitude of the velocity is 0b

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