State two properties of vector addition. from Physics Motion in A Plane Class 11 Manipur Board
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State two properties of vector addition.

Two properties of vector addition are:

(i) Addition of vectors is commutative.

That is, (straight A with rightwards harpoon with barb upwards on top space plus stack space B space with rightwards harpoon with barb upwards on top equals space B with rightwards harpoon with barb upwards on top space plus space A with rightwards harpoon with barb upwards on top 

(ii) Addition of vectors is associative.  

Mathematically, left parenthesis straight A with rightwards harpoon with barb upwards on top space plus space straight B with rightwards harpoon with barb upwards on top right parenthesis space plus space straight C with rightwards harpoon with barb upwards on top space equals space straight A with rightwards harpoon with barb upwards on top space plus space left parenthesis straight B with rightwards harpoon with barb upwards on top plus straight C with rightwards harpoon with barb upwards on top right parenthesis

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What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
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Give three examples of scalar quantities.

Mass, temperature and energy
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Give three examples of vector quantities.

Force, impulse and momentum.
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What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
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What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


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