In the given velocity (V) versus time (t) graph, accelerated and decelerated motions are respectively represented by line segments
CD and BC
BC and AB
CD and AB
AB and CD
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This question was previously asked in
UPSC NDA-1 – 2019
In a velocity-time graph, accelerated motion is represented by a line segment with a positive slope (velocity increasing with time), and decelerated motion (or retardation) is represented by a line segment with a negative slope (velocity decreasing with time).
Line segment CD has a positive slope, indicating that velocity is increasing with time, which is accelerated motion. Line segment AB has a negative slope, indicating that velocity is decreasing with time, which is decelerated motion.