Not always. The direction is only necessary if you're discussing
a distance vector, but you're usually not.
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A vector quantity refers to a physical quantity that has both magnitude and direction. Some examples of vector quantities include velocity (speed and direction), force (magnitude and direction), and displacement (distance and direction).
A vector is something which has both magnitude and direction. Examples include velocity which is speed (magnitude) in a given direction. When written using orthogonal components vectors are written as a column of numbers in parentheses (a one-dimensional array).
Vectors are used whenever there is a measurement in which not only the magnitude is relevant, but also the direction. Typical uses of vectors include position, velocity, acceleration, force, torque, and others.
These are two different types of measurements. One is length or distance and the other is weight or mass. Please edit your question to include more context or details.
Any vector quantity does. Examples of vector quantities include but are not limited to . . . - Displacement - Velocity - Acceleration - Torque - Force - Electric field - Momentum - Poynting vector