﻿ How can you explain that the flying of a bird is an example of resultant of two vectors?  from Physics Motion in A Plane Class 11 Manipur Board

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How can you explain that the flying of a bird is an example of resultant of two vectors?

Flying of a bird is an example of resultant of two vectors.

i) When the bird flies, it strikes the air with wings A and B towards O along

ii) Action and reaction are opposite. Therefore, the air strikes the wings in opposite direction i.e. along .

iii) The resultant of these vectors is in the upward direction which balances the weight of the bird.

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Give three examples of scalar quantities.

Mass, temperature and energy
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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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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 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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