**EXPERT ANSWER **

**Answer :**D) a parabolic curve.

**Answer :**A) a horizontal straight line.

**Answer :**C) a straight line making an angle with the time axis

**Answer :**C) at rest.

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# An object is moving with constant non-zero acceleration in the +x-axis. The position versus time graph of this object is A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.An object is moving with constant non-zero velocity in the +x-axis. The velocity versus time graph of this object is A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.An object is moving with constant non-zero acceleration in the +x-axis. The velocity versus time graph of this object is A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.If the position versus time graph of an object is a horizontal line, the object is A) moving with constant non-zero speed. B) moving with constant non-zero acceleration. C) at rest. D) moving with infinite speed. E) none of the above.If the velocity versus time graph of an object is a horizontal line, the object is A) moving with constant non-zero speed. B) moving with constant non-zero acceleration. C) at rest. D) moving with infinite speed. E) none of the above

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**EXPERT ANSWER **

**Answer :**D) a parabolic curve.

**Answer :**A) a horizontal straight line.

**Answer :**C) a straight line making an angle with the time axis

**Answer :**C) at rest.