Question

Which options are correct about motions of the following two cases: (a) a carom coin is striking against the side of a board and not rebounding smoothly but hopping up as it rebounds, (b) a car going along a zig zag path on a road.

• A. (a) Three dimensional motion, (b) two dimensional motion
• B. (a) Three dimensional motion (b), three dimensional motion
• C. (a) Two dimensional motion (b), two dimensional motion
• D. (a) Two dimensional motion (b), three dimensional motion

Answer 1

The correct option is A (a) Three dimensional motion, (b) two dimensional motion

(a) is an example of $3-D$ motion since the carom coin goes out of the plain of carom board in upward direction when it hops.
(b) is an example of $2-D$ motion because the plain of motion is road only which is $2-D$