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Fig 7.10 shows the distance-time graph of three objects A,B an... - Science
Fig 7.10 shows the distance-time graph of three objects A,B and C. Study the graph and answer the following questions:
(a) Which of the three is travelling the fastest?
(b) Are all three ever at the same point on the road?
(c) How far has C travelled when B passes A?
(d) How far has B travelled by the time it passes C?
(a)Object B is travelling the fastest (because its slope is the steepest).
(b)No, all three are never at the same point at the same time (the three lines do not intersect at a single common point).
(c) C has travelled approximately 5.71 \text{ km} when B passes A.
(Calculation: On the graph scale, 1 small box on distance axis = 4/7 \text{ km}. C travels about 10 boxes from its start point).
(d) B has travelled approximately 5.14 \text{ km} by the time it passes C.
(Calculation: B passes C at 9 small boxes on the distance axis. 9 \times 4/7 = 5.14 \text{ km}).