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Question

Which of the following is the speed time graph of the given velocity time graph?


A

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B

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C

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D

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Solution

The correct option is B


When velocity is positive, speed is the same as its magnitude at that moment. Magnitude of velocity is equal to speed at that instant.

So whenever particle's velocity is negative its speed will be same in magnitude but positive.

It's like taking the mirror image of graph about time axis for which particle's velocity is going below x-axis.Refer to the shown diagram:


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