A physical quantity is something that can be measured. Scalar quantities only have a magnitude or size.
Some examples of scalar quantities include:
Vector quantities have both magnitude and an associated direction. This makes them different from scalar quantities, which just have magnitude.
Some examples of vector quantities include:
The velocity of an object is its speed in a particular direction. Velocity is a vector quantity because it has both a magnitude and an associated direction. To calculate velocity, displacement is used in calculations, rather than distance.
Unlike distance, which is a scalar quantity, displacement is a vector quantity. It includes: