9th Class Science Time and Motion Question Bank 9th CBSE Science Motion

  • question_answer
      Suppose a squirrel is moving at a steady speed from the base of a tree towards some nuts. It then stays in the same position for a while, eating the nuts, before returning to the tree at the same speed. A graph can be plotted with distance on the x-axis and the time on y-axis. Observe the graph carefully and answer the following questions. (i)Which part of the graph shows the squirrel moving away from the tree? (ii) Name the point on the graph which is 6 m away from the base of the tree. (iii) Which part of the graph shows that the squirrel is not moving? (iv) Which part of the graph shows that the squirrel is returning to the tree? (v) Calculate the speed of the squirrel from the graph during its journey.

    Answer:

                   (i) Part AB (ii) Part B     (Hi) Part BC   (iv) Part CD  (v) Total distance travelled = 6m + 6m = 12 m Time = 11s.


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