Question

(Class 11)--Suggest a suitable frame of reference for:
(a) Specifying the positions of different mile-stones on a long straight road.
(b) Specifying the positions of dot on a carrom board.
(c) Specifying the position of a bird flying in the sky.
(d) Specifying the positions of an ant moving on a floor.
Give only correct answer only if you don't know do not answer just to gain
points
It is important please answer it please.

Answer 1

Answer:

Origin is the answer to all of those.