9th Class Science Time and Motion Question Bank Case Based MCQs - Motion

  • question_answer
    Read the following and answer questions from [1] to [5].
    The distance travelled by a body is the actual length of the path covered by it, irrespective of the direction in which body travels. It is a scalar quantity.
    The displacement of a body is the change in the position of the object when it moves from a given position to another position. It is equal to the length of the shortest path measured in the direction from the initial position to the final position of the object. It is a vector quantity.
    In the figure given below,
    In moving from C to B, two paths are possible, CAB and CB, where, CAB is the distance covered and CB is the displacement of object.
    Choose the correct statement.

    A) The displacement can be greater than distance when the path of motion is circular.

    B) The displacement can never be greater than distance. It can either be less than or equal to distance.

    C) The displacement can be greater than distance when the path of motion is parabolic.

    D) The displacement of an object is always equal to the distance travelled by it.

    Correct Answer: B

    Solution :

    [b] As distance is the actual path covered, while displacement is the shortest path between initial and final position. So, Distance > Displacement


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