To accurately respond to your question, I would need to see the actual velocity versus time graph you are referring to. However, I can provide some general guidance on interpreting such graphs:
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Positive Acceleration: This occurs when the velocity is increasing. If the line on the graph is sloping upward (above the time axis), the acceleration is positive.
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Velocity of 0: If the line intersects the time axis and stays there after 60 seconds, then the velocity is 0 after that point.
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Constant Position: If the velocity is 0 (i.e., the line is on the time axis), it implies that the object's position is not changing, indicating that it is at rest.
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Acceleration of 0: If the velocity is constant (the line is horizontal), then acceleration is 0.
Based on these interpretations, you can compare statements in your question with the graph you have. Please refer to the graph to determine which statement is correct:
- If the line is horizontal from 0 to 60 seconds, the statement "Its acceleration is 0 from 0 seconds to 60 seconds." is correct.
- If the line is above the time axis and sloping upward, then "Its acceleration is positive from 0 seconds to 60 seconds." is correct.
- If the line crosses the time axis after 60 seconds, "Its velocity is 0 after 60 seconds." is correct.
- If the line is horizontal after 60 seconds, then "Its position is constant after 60 seconds." is correct.
Please check these interpretations against your graph to determine the correct statement.