NEET Physics: position-time graph Practice Questions
15 free multiple-choice questions on position-time graph (Kinematics) for NEET Physics, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. Which statement accurately describes the relationship between the shape of a position-time graph and acceleration?
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Correct answer: B — A straight line indicates uniform acceleration
For an object moving with constant acceleration, the position-time graph is a curve (specifically, a parabola if initial velocity is zero) whose slope changes linearly, meaning the shape is generally curved. A straight line implies constant velocity (zero acceleration).
Q2. The slope of a position-time graph (x-t graph) represents which physical quantity?
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Correct answer: A — Velocity
The slope of a position-time graph is defined as the change in position divided by the change in time, which is the definition of average velocity.
Q3. If a particle moves with a constant velocity, what is the shape of its position-time graph?
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Correct answer: C — A straight line with a positive slope
Constant velocity means the rate of change of position is constant. Since slope represents velocity, a constant velocity corresponds to a straight line with a constant, non-zero slope.
Q4. A particle moves along a position-time graph. If the area under the curve is calculated, what physical quantity does this area represent?
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Correct answer: A — Displacement
The area under a position-time graph represents the displacement of the particle.
Q5. A position-time graph is a curve. What does the slope of the tangent to the curve at any point represent?
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Correct answer: D — Instantaneous velocity
The slope of the tangent to the position-time curve at any specific point gives the instantaneous velocity of the object at that moment.
Q6. If the position-time graph of an object is a horizontal line, what can be concluded about the motion of the object during that time interval?
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Correct answer: D — C The object is at rest
A horizontal line in a position-time graph indicates that the position is not changing, hence the object is stationary (at rest).
Q7. If a position-time graph is a horizontal line, what can be concluded about the motion of the particle?
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Correct answer: C — The particle is at rest (zero velocity)
A horizontal line indicates that the position (x) is not changing with time (t), meaning the velocity is zero, and the particle is at rest.
Q8. A particle is at rest for a time interval t₁ to t₂ on an x-t graph. What does the shape of the graph between t₁ and t₂ indicate?
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Correct answer: C — The particle is at a constant position.
If the particle is at rest, its position does not change, meaning the line segment on the position-time graph is horizontal, indicating zero displacement and zero velocity (constant position).
Q9. If the x-t graph for a particle is a straight line with a positive slope, what does this imply about the particle's motion?
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Correct answer: B — The particle is moving in the positive direction with constant positive velocity.
A straight line with a constant positive slope means the velocity is constant and positive, indicating uniform motion in the positive direction.
Q10. If the position-time graph is a straight line with a positive slope, what does it indicate about the motion?
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Correct answer: B — The object is moving with constant positive velocity
A straight line on an x-t graph signifies constant velocity. A positive slope means the object is moving in the positive direction at a constant speed.
Q11. A position-time graph shows a straight line with a positive slope. What does this imply about the motion?
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Correct answer: C — The particle is moving with constant positive velocity
A straight line with a positive slope means the velocity is constant and positive, indicating the particle is moving in the positive direction at a constant speed.
Q12. A position-time graph shows a curve that is concave up. What does this indicate about the particle's velocity?
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Correct answer: C — The velocity is increasing (acceleration is positive).
If the curve is concave up, the slope (velocity) is increasing, meaning the velocity of the particle is increasing (positive acceleration).
Q13. The area enclosed between the position-time graph and the time axis represents which physical quantity?
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Correct answer: A — C Displacement
The area under a position-time graph gives the net displacement of the particle during that time interval.
Q14. A position-time graph for an object is plotted on a Cartesian coordinate system. What physical quantity is represented by the vertical axis of such a graph?
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Correct answer: A — Position
The vertical axis (y-axis) of a position-time graph always represents the position of the object, typically measured in meters (m).
Q15. When the slope of a position-time graph is zero, what does it signify physically?
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Correct answer: D — The object is at rest
A zero slope means the rate of change of position with respect to time is zero, which signifies that the object is momentarily at rest (its velocity is zero).
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