7th Class Science Time and Motion Question Bank Motion and Time

  • question_answer
    The object starts from 0 having a straight line motion along the path OPQRS is represented by the distance-time graph shown in figure. Match the given statements to the different parts of the graph correctly.
    (i) Object is moving with maximum speed.
    (ii) Object starts moving in reversed direction.
    (iii) Object is at rest.
    (iv) Average velocity of object is zero.

    A)
    (i) (ii) (iii) (iv)
    OS OP RS PQ

    B)
    (i) (ii) (iii) (iv)
    OP RS QR OS

    C)
    (i) (ii) (iii) (iv)
    PQ RS OP QR

    D)
    (i) (ii) (iii) (iv)
    QR PQ OS OP

    Correct Answer: B

    Solution :

    During OP, distance travelled is maximum for small time interval. During, RS, distance travelled is in reverse direction. During QR, object is at rest as time passes, distance is fixed. During OS, displacement is zero, hence velocity will be zero.       


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