Vector Quantities

Vector and Scalar Quantity

1. A scalar quantity is a quantity which can be fully described by magnitude only.
2. A vector quantity is a quantity which is fully described by both magnitude and direction.

Vector Diagram

1. The arrow shows the direction of the vector.
2. The length representing the magnitude of the vector.

Equal Vector

Two vectors A and B may be defined to be equal if they have the same magnitude and point in the same direction.