Motion in A Plane

Physics Part I

Physics

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(a) Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by,

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

Let v

Let v

Time taken by the projectile to reach point P =Â

Using the first equation of motion along the vertical and horizontal directions, we get

v

v

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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.Â

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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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