SCALARS
Scalar quantity is a quantity that is described by a magnitude.
One characteristic of scalar quantities is they add up or subtract like ordinary numbers. For example, the quantity length, l₁ = 6 m and another one, l₂ = 4 m. The sum of these two lengths is given as l = l₁ + l₂ = 6 m + 4 m = 10 m. The scalar quantity, length, has a magnitude of 10 and has the unit meters represented by m. Learn more about Scalar Quantity
VECTORS
Vector quantity is a quantity that is completely described by both magnitude and direction.
Vector quantities are important in the study of physics. If scalar quantities follow ordinary arithmetic rules, vector quantities do not. This is one important characteristic of vectors. Learn more about Vector Quantity
SCALARS vs VECTORS
The video goes through three examples, and demonstrates how they are scalar measurements: volume, temperature and distance. It also describes how distance can be changed to become a vector measurement - there'll be more about that in our next video.
Here is a video of examples of scalars and vectors.
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