What Is The Difference Between A Scalar And Vector Quantity?

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Unknown on 8:13 AM

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I believe that you've learnt what is is a vector quantity and what is a scalar quantity before. Most probably you have came to this post via searching for the difference between a scalar and vector quantity. Here in this post I will let you know about this. So read on....

Scalar Quantity 

1. A scalar quantity is a kind of quantity which can be easily defined by a single magnitude. Scalar quantity has no direction. For example : Mass, Time, Work etc.
2. A scalar is changed only when its magnitude is changed.
3. Addition, Subtraction, Multiplication is carried out by simple algebraic rules.
4. The product of two scalers is Zero only when the value of one of them, or both is zero.
5. The product of two scalars must be a scalar. 

Vector Quantity 

1. A vector quantity is a quantity that must be defined by both magnitude and direction. For example: Displacement, Acceleration, Force etc.
2. A vector is changed, when its magnitude is changed, or direction is changed or both magnitude and direction are changed simultaneously.
3. Vector Algebra is used for vector addition, Subtraction and Multiplication.
4. The product of two vectors may be Zero, even if non of them is zero. 
5. The product of two vectors may be scalar or vector. 

If you still have some problem regarding the Difference Between A Scalar And Vector Quantity then look at the following video from KhanAcademy:

Filled Under:

Vectors