JEE Main Physics question

Physics Motion in a Straight Line JEE Main

Which of the following speed–time graphs exist in nature?

(A)A wavy curve oscillating both above and below the time axis
(B)A periodic sequence of humps, all lying on or above the time axis (never negative)
(C)A sequence of "V"/triangular shapes touching the time axis but never going below it
(D)All of the above that never take negative valuesCorrect

Answer: (D)

Solution

Speed is defined as and can never be negative. Any graph with genuine negative excursions below the time axis cannot represent speed and is physically impossible. Among valid

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Question ID VK-152078