A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector.

Does scalar or vector have direction?

Vectors have magnitude and direction, scalars only have magnitude. ... Weight is a force which is a vector and has a magnitude and direction. Mass is a scalar.

Does scalar change direction?

Unlike vectors, scalars do not have direction. Multiplying a vector by a scalar is the same as multiplying the vector's magnitude by the number represented by the scalar.