Vector quantity has both magnitude and direction. Every scalar quantity is one dimensional. Vector quantity can be one, two or three dimensional. Any change in scalar quantity is the reflection of change in magnitude. Any change in vector quantity can reflect either change in direction or change in magnitude or changes in both. Scalar quantity cannot be resolved as it has exactly same value regardless of direction.
Vector quantity can be resolved in any direction using the sine or cosine of adjacent angle. Any mathematical operation carried out among two or more scalar quantities will provide a scalar only. However, if a scalar is operated with a vector then the result will be a vector.
As we will soon see, these words are associated with mathematical quantities that have strict definitions. The mathematical quantities that are used to describe the motion of objects can be divided into two categories. The quantity is either a vector or a scalar. These two categories can be distinguished from one another by their distinct definitions:. The remainder of this lesson will focus on several examples of vector and scalar quantities distance, displacement, speed, velocity, and acceleration.
As you proceed through the lesson, give careful attention to the vector and scalar nature of each quantity.
A geostationary satellite is in orbit above Earth. It moves at constant speed but its velocity is constantly changing since its direction is always changing. Scalar and vector quantities A quantity that has magnitude but no particular direction is described as scalar. Scalar quantities Scalar quantities only have magnitude size.
It is represented by an arrow and the direction of this arrow is the same as that of the quantity. A vector is known as a unit vector when its magnitude is 1 and this unit vector is used to define the direction.
For calculating every vectorial unit we need a vector, so we need to understand this term. Vector is being used in our day to day life to locate objects and individuals. In sports like basketball, Cricket, Baseball Vector is used by the players.
The player throws the ball or shoots the target with an angle in a direction. A vector is defined because of its magnitude and direction.
So if we are making even a small change in either its magnitude or direction, a vector can be changed. We can define a vector in two dimensional and three-dimensional space.
Due to this characteristic of Vector multidimensional problems can be solved by using this. It is very important to understand the basics for the Scalar and Vector and also how these quantities are used in our day to day life.
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