Asked by ABAINEH
4. The displacement-time graph of an object moving along the x-axis in a straight line with a positive slope, the object has a:- A. steady increasing velocity B. Constant displacement C. Constant non-zero acceleration D. Constant velocity
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Answer: D. Constant velocity.
Reason: For a displacement vs. time graph, the slope = velocity. A straight line means the slope is constant, so the velocity is constant. A positive slope means that constant velocity is positive (moving in +x). The other options are incorrect: (A) implies velocity changing; (B) would be a horizontal line (zero slope); (C) would produce a curved (parabolic) x–t graph, not a straight line.
Reason: For a displacement vs. time graph, the slope = velocity. A straight line means the slope is constant, so the velocity is constant. A positive slope means that constant velocity is positive (moving in +x). The other options are incorrect: (A) implies velocity changing; (B) would be a horizontal line (zero slope); (C) would produce a curved (parabolic) x–t graph, not a straight line.
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