A quantity described by magnitude and a specific direction is a _____.

### Why this is right A vector is defined by both its magnitude, meaning its size or amount, and its direction. If either part is missing, the vector is not fully described. ### The concept Force, displacement, velocity, and acceleration are examples of vectors in the material. A scalar, by contrast, has magnitude only. Temperature and mass do not need a direction to be described. The distinction is useful whenever direction changes the meaning of a measurement. ### Terms - **Vector**: a quantity with both magnitude and direction. - **Magnitude**: the size or amount of a quantity. - **Scalar**: a quantity described by magnitude alone. ### Remember If direction is part of the description, the quantity is a vector.