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

Explanation

i) Besides having magnitude and direction, each vector has also a location in space.
ii) A vector can vary with time. As example, velocity and acceleration vectors may vary with time.
iii) Two equal vectors a and b having different locations may not have same physical effect. As an example, two balls thrown with the same force, one from earth and the other from moon will attain different maximum heights.