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

  • question_answer
    Match the Column I with Column II and choose appropriate option from the codes given below              
    Column I Column II
    (a) Uniform velocity 1.
    (b) Uniform retardation 2.
    (c) Uniform acceleration with initial velocity 3.
    (d) Uniform acceleration at steady rate 4.
    Codes

    A) A-3,  B-4,  C-2,  D-1

    B) A-4,  B-3,  C-1,  D-2

    C) A-4,  B-1,  C-2,  D-3

    D) A-1,  B-2,  C-3,  D-4

    Correct Answer: B

    Solution :

    [b] A\[\to \]4; Uniform velocity is shown by an s-t graph having straight and positive slope with time axis.
    B\[\to \]3; In uniform retardation, the position decreases with time.
    C\[\to \]1; The slope of graph (1) shows uniform acceleration with same initial velocity.
    D\[\to \]2; The graph (2) shows that the acceleration decreases steadily with time.


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