Why there is always + sign in vector
Hello,Aspirant
So, if look at a vector in that sense, then you will realize that a vector is just a scalar with an associated direction. The + and − signs before a vector quantity hence point to opposite directions associated with the vector. Here, it must be stated that vectors have an absolute magnitude, by definition.
Hope it helps.
dear candidate,
Scalars are physical quantities which have only a number value or a size (magnitude). A scalar tells you how much of something there is. Example Distance cannot be negative. any scalar quantity cannot be negative hence we do not use any sign to denote it also it has no direction.
Vectors are different because they are physical quantities which have a size and a direction. A vector tells you how much of something there is and which direction it is in. example displacement is a vector quantity with both magnitude and direction. It can be negative , zero, or positive. any vector quantity can have positive (+) or negative (-) sign to denote its direction.
The sign along with the velocity value just depicts it's motion, if it's along the reference, then it would be positive, if not, then it would be negative.
Negative velocity just means velocity in the opposite direction then that would be positive only.
Acknowledging your quest.
Feel free to ask more.
Best of luck.
