The graph represents the position as a function of time for an object in one-dimensional motion....

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Answer 1

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Answer #1

We know Slope (tan theta)of position time graph gives us velocity .

Slope is negative from 0 to 2 sec

Slope is 0 at t=2 sec

Slope is positive from t=2 to t=4 sec.

There fore velclocity is positive after t=2 sec to t=4 sec,

Therefore 2nd last option is correct that velocity is positive at t=3 sec and t=4 sec

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Answer 2

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