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Class 10 Class 12
Show that if the projectile attains the maximum height of H and falls at a distance R, then it is projected at an angle θ given by

Let the speed with which the projectile be projected at angle θ  be 'u'.

The maximum height and the horizontal range is given by,

Horizontal range,

Maximum height,
Ratio of horizontal range to maximum height is given by,

∴

That is,
, is the angle of projection.
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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.
1212 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

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 scalar quantities.

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

Force, impulse and momentum.
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