The following figure represents the velocitytime graph of a moving car on a road: Which segment of the graph represents the retardation?

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Q: 25 (NDA-II/2015)
The following figure represents the velocitytime graph of a moving car on a road: Which segment of the graph represents the retardation?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,0,4,4,0,0,0

keywords: 

{'velocitytime graph': [0, 0, 0, 1], 'graph': [0, 1, 1, 0], 'segment': [1, 1, 0, 1], 'following figure': [0, 3, 2, 4], 'road': [1, 2, 5, 6], 'ab': [0, 0, 1, 0], 'car': [0, 2, 12, 17], 'bc': [1, 0, 1, 2]}

In this question, we are given a velocity-time graph of a moving car on a road and we need to identify the segment that represents the retardation.

Option 1 (AB): This segment shows a positive slope, indicating an increasing velocity. Therefore, this segment does not represent retardation.

Option 2 (BC): This segment shows a negative slope, indicating a decreasing velocity. When the slope of a velocity-time graph is negative, it represents retardation or deceleration. So, this segment represents retardation.

Option 3 (CD): This segment shows a horizontal line, indicating a constant velocity. Retardation is characterized by a decreasing velocity, so this segment does not represent retardation.

Option 4 (None): This option suggests that none of the segments represent retardation, but since option 2 (BC) represents retardation, this is not the correct answer.

Therefore, the correct answer is option 2 (BC) since it represents the segment of the graph that represents retardation.

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