2023 · Q2
Consider 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?
General KnowledgePhysics
- A$v_{a} < v_{b} < v_{c}$
- B$V_{b} > V_{a} > V_{c}$
- C$V_{a} = V_{b} = V_{c}$
- D$V_{a} > V_{b};\ V_{a} > V_{c}$
Explanation
Speed is the slope of a distance-time graph: the steeper a segment, the greater the speed. Comparing the slopes of parts A, B and C of the journey graph gives the ordering Vb > Va > Vc. The graph itself is not present in this text record, so the ordering follows the published key for this paper. Key disputed: verify against the official UPSC key.