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Class 10 Class 12
A girl walks 100 m at angle of 30° North of West. What is the ratio of the distance travelled by the girl in North to West direction?

Total distance covered by the girl is equal to total displacement = 100m

Angle,  = 30o

Magnitude of the component of displacement along North is,

Magnitude of the component of displacement along West is,

Therefore, the ratio of the distance travelled by the girl in North to West direction is given by,

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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.
835 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 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.

814 Views

Give three examples of scalar quantities.

Mass, temperature and energy
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