Motion in A Plane

Physics Part I

Physics

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A body is projected with velocity u at angle Î¸ with vertical. At what height will it strike the wall, r distance away from the point of projection?

Consider a body which is projected from O in XY plane with velocity 'u' at angleÂ Î¸ with vertical, and

The body is projected at an angleÂ Î± = 90Â°â€“Î¸ with the horizontal.Â

Let the body strike the wall at height h.

So,Â co-ordinates of point P where the projectile hits the wall are â†” (r,h).

Equation of trajectory is given by,Â

Â

Â Â Â Â Â Â Â [âˆµÂ ]Â

SinceÂ Â lies on trajectory,Â

âˆ´ Â Â Â Â ,Â

is the height at which the body will strike the wall.

is the height at which the body will strike the wall.

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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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