NCERT Exercise 2.1 - Motion in a Straight Line
Question: In which of the following examples of motion can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the ground. (d) a tumbling beaker that has slipped off the edge of a table.
Answer: Only **(a) a railway carriage** can be treated as a point object.
Full step-by-step NCERT solution with diagrams on Something by Zero.