Question
Download Solution PDFConsider a journey by a car represented by the graph given below in three parts A, B and C. The speed of the car in these parts is Va, Vb and Vc, respectively:
Which one of the following is correct in this case?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Vb > Va > Vc.
Key Points
- To find the speed from a distance-time graph, you need to calculate the slope of the graph at any given point.
- The slope represents the rate of change of distance concerning time, which is the definition of speed.
- The formula for speed (v) is given by the ratio of the change in distance to the change in time:
- \(v = {\Delta d \over \Delta t}\)
- Here,
- v is the speed,
- Δd is the change in distance, and
- Δt is the change in time.
- In the given graph, the order of decreasing slope is given by b>a>c.
- Hence, the velocity in decreasing order is given by Vb > Va > Vc
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