question_answer

State in the following cases, whether the motion is one, two or three dimensional motion : (a) a kite flying on a windy day   (b) a speeding car on along straight high way (c) a carrom coin rebounding from the side of the board (d) a planet revolving around its star.

Answer:

                (a) The motion of kite in the sky is three dimensional motion because the kite while flying may be changing the direction as well as losing or gaining the height, i.e., the motion is in space. (b) The motion of speeding car on a long straight highway is one dimensional motion, since the motion is confined along a st. line. (c) The motion of a carrom coin rebounding the side of the board is two dimensional motion, since the motion is confined in the plane of board. (d) The motion of a planet revolving around its star is two dimensional motion, because the motion is confined in a fixed plane.