In physics, what does a vector quantity indicate?

In physics, a vector quantity is defined by both its magnitude and direction. This means that in order to fully describe a vector, you need to not only state how much (magnitude) there is, but also in what direction it is acting. Common examples of vector quantities include velocity, which indicates how fast something is moving and in what direction, and force, which describes how much push or pull is applied and in what direction the force is exerted. Understanding vector quantities is essential in physics because they provide crucial information for analyzing motion, forces, and other physical phenomena. Hence, the correct choice emphasizes both essential components: magnitude and direction, which encapsulates the full description of a vector quantity.