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what is vector quantity?Give an example? |
The quantities like distance,displacement,etc., are known as physical quantities.The magnitude of a physical quantity means size of the physical quantity.A physical quantity having magnitude (or size) is known as a scalar quantity.A scalar quantity has no direction.A physical quantity having magnitude as well as direction is known as a vector quantity Displacement is a vector quantity(because it has magnitude as well as direction) for example,if a car travels a distance of 50 km,then the expression is '50 km' is the distance travelled , and if the car is travelling in a straight line in the East direction (or any other direction), then the expression "50 km towards East" is the displacement of the car. examples of vector quantities are :Force,velocity,acceleration ,current density,intensity of electric field etc |