Key Concepts Vector quantities consist of both magnitude and direction . The magnitude is made up of a number and a unit.
Scalar quantities consist of only a magnitude.
Position, displacement, velocity, acceleration, force, weight, and momentum are examples of vector quanti- ties. The direction of a vector is stated using square brackets behind its magnitude. Scalar quantities include such things as mass, time, distance, speed, work, and energy, to name but a few. Vector quantities are represented on a diagram by a directed line segment , drawn to scale , with reference coordinates to show direction. The tail of a vector is called the origin and the tip is called the terminal point .