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  • Understanding Scalars: Magnitude vs. Direction
    A quantity that expresses magnitude but not direction is called a scalar.

    Here are some examples of scalars:

    * Temperature: It tells you how hot or cold something is, but not which direction the heat is flowing.

    * Speed: It tells you how fast something is moving, but not in which direction.

    * Mass: It tells you how much matter an object contains, but not where it is located.

    * Time: It tells you how long something takes, but not in what direction time is flowing.

    In contrast, quantities that have both magnitude and direction are called vectors.

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