Mass and Weight

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Mass : Mass is the quantity of matter possessed by a body.

* Mass of a body is a fundamental quantity. 

* Mass is a scalar quantity. 

* If a body exists in this universe, then its mass can never be zero.

Weight : Weight of a body is the force with which a body is gravitationally attracted towards earth.
Mathematically  relation  of Weight is
    W= mg

* Weight of a body  is a derived quantity. 

* Weight is a vector quantity. 

* Weight of a body can be zero.
e.g. when g = 0 then W = 0.

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