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What are Scalar and vector quantity?  The physical quantities are of two types: Scalars and Vectors. Scalar and vector quantity A Scalar quantity A physical quantity which has only magnitude and no direction is called a scalar quantity or scalar . The scalars can be added, subtracted, multiplied and divided by ordinary law of algebra. Mass, length, time, distance, speed, temperature, work etc. are a few examples of scalars. A Vector quantity A physical quantity which has magnitude as well as direction is called a vector quantity or vector.  Velocity ,  force , weight, momentum, impulse, torque, temperature gradient, gravitational field etc. are the some of the examples of vector. Vectors cannot be added, subtracted, multiplied by ordinary law of algebra. For these operations on vectors we have to use laws of vectors. It is important to note that the division of a vector by another vector is not defined because the division of a vector by a directi...