Distinguish between Vector quantity and a Scalar quantity.

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Vector quantities scalar quantities
$(1)$ The physical quantities which require direction over and above their magnitude for their specification are called vector quantities. $(1)$ The physical quantities which can be described bytheir magnitude only are called scalar quantities.
$(2)$ For Example : velocity, acceleration, force, weight, Displacement, momentum etc. $(2)$ For Example : speed, mass, volume, size, temperature, amount of substance, power, work done, pressure, time etc.
$(3)$ While representing these quantities both magnitude and direction are to be stated. $(3)$ While representing these quantities only its magnitude is required i.e., correct value with units.
$(4)$ These quantities can not be added algebraically. $(4)$ These quantities are added or substracted algebraically.

 

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