Explain the Types of physical quantities, Scalar quantities, Vector Quantities, Tensor Quantities, Difference between Scalar and Vector quantities at Aakash The vector quantities follow the laws of vector addition. Displacement, Velocity, and Work some of the vector quantities. How to denote a vector quantity ? In physics and mathematics, we denote a vector quantity by an arrow above the variable defining it. For example, we write the velocity vector with the '→' symbol over the letter v. A scalar quantity is a physical quantity with only magnitudes, such as mass and electric charge. On the other hand, a vector quantity is a physical quantity that has both magnitudes and directions like force and weight. In this article, let us familiarize ourselves with vectors and scalars. Learn what are scalar and vector quantities with examples and difference. A vector quantity has both magnitude and direction, while a scalar quantity has only magnitude.