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A vector has magnitude and dirction 9i) ...

A vector has magnitude and dirction 9i) Does it have a olocition in the sparce ? (ii) Can it vary with time ? (iii) Will two equal vectors ` vec a` and vec b` different locations in sparc necessarily have identical phusical effects ? Give examples in support of your answer.

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(i) A vector in general has no definite location in space because a vector remains unaffected whenever it is displaced anywhere in space provided its magnitude and direction do not change. However a position vector has a definite location in space.
(ii) A vector can vary with time e.g. the velocity vector of an accelerated particle varies with time.
(iii) Two equal vectors at different lociations in space do not necessarily have same physical effects. For example. two equal forul forces acting at two different points on a body which can cause the rotation of a body about an axis will not produce equal turning effect.
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