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How we can identify scalar and vector quantities ex work is scalar

How we can identify  scalar and vector quantities ex work is scalar 

Grade:12th pass

3 Answers

Arun
25750 Points
4 years ago
A vector quantity has a direction and a magnitude, while a scalar has only a magnitude. You can tell if a quantity is a vector by whether or not it has a direction associated with it. Example: Speed is a scalar quantity, but velocity is a vector that specifies both a direction as well as a magnitude
work has no direction hence it is scalar
Vikas TU
14149 Points
4 years ago
Dear student 
Hope you understand vector and scalar , 
But here is the resion why work s scalar quantity 
work done due to displacement caused by a force is a scalar quantity. The dot product of vector quantities is always scalar which means it is has only magnitude and no direction.
Hope this helps 
Good Luck 
aswanth nayak
100 Points
4 years ago
Dear Student,
 
A vector quantity has a direction and a magnitude, while a scalar has only a magnitude. You can tell if a quantity is a vector by whether or not it has a direction associated with it. Example: Speed is a scalar quantity, but velocity is a vector that specifies both a direction as well as a magnitude.Hence it is Scalar because it has no DIRECTION.
 
Hope this helps you
Regards

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