multiplication and division by scalar vector
Answers
Scalars...
1)They have only magnitude.
2) Addition or Substraction of scalar quantities can be done by simple arithmetical means.
3) Eg: Mass, Distance, Time,Speed
Vectors and scalars are mathematical constructs which physicists employ. Some physical quantities are represented by scalars and some by vectors and corresponding operations are employed upon them while dealing with them. Vector quantities have a direction associated with them while scalars are treated like simple numbers.
The following quantities have a magnitude but no direction associated with them, and are examples of scalars:
distance
speed
time
mass
energy
density
temperature
Normally scalar quantities follow the basic algebraic rules for any mathematical manipulation such as addition, subraction, multiplication or division (as we do with numbers).
The concept of direction establishes a relationship between two points in space; that is, the "direction" from one point to another. For example, the direction from point A to point B could be designated A-to-B while the opposite direction would be in that case B-to-A. Direction is dimensionless; that is, it has no measurement units and represents only a line designating the sense of from-to (from A to B) with no sense of "how much" which is considered the "magnitude" of a measurable quantity.