Which one among the following questions would be an 'open ended' question?
  • 1

     Why is it easier to roll a barrel than to slide it on a flat surface?

  • 2

    How do banked curves on roads prevent skidding?

  • 3

    Why do we slip on a banana peel?

  • 4

     What would happen if force of friction ceased to exist?

Answer:- 4
Explanation:-

 Open-ended questions are the subjective type of questions which are answered with some creativity. They can also be called the free-response type of questions. The question "what would happen if force of friction ceased to exist?" has to be answered creatively while all other questions have some law behind them.

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