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  5. Time and Motion

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

  • question_answer
    Two friends A and B started at different times and covered 30 km as shown in the graph. Identify the correct statement from the following.                

    A)          A and B move with the same speed.

    B)                  B moves with non-uniform speed.

    C)                  A completes his journey early.

    D)                  B overtakes A at 11.20 a.m.

    Correct Answer: D

    Solution :

    Statements (A), (B) and (C) are incorrect according to the given graph. A takes more time than B. So, their speeds are different. Next, the slope for A and B is a straight line, hence B moves with uniform speed. Finally, it is B and not A who completes the journey early. B overtook A at 11.20 a.m.


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