Displacement–Time and Velocity–Time Graphs

Displacement–Time and Velocity–Time Graphs MDCAT MCQs with answers

12 past paper MCQs on Displacement–Time and Velocity–Time Graphs, from the Force and Motion unit of MDCAT Physics. The year each question appeared is shown where known; tap “Show answer” for the correct option and a short solution.

Read the notes first Practise the unit as a quiz

1.In a displacement-time graph, if the slope is constant then the velocity is: (MDCAT 2023)

  1. variable
  2. constant
  3. may be variable or constant
  4. infinite
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Correct answer: (b) constant

The slope of a displacement-time graph is the velocity, so a constant slope is a constant velocity.

2.The velocity-time plot for a moving particle is a straight line. This means: (MDCAT 2023)

  1. the particle has a constant acceleration
  2. the particle has never turned around
  3. the particle has zero displacement
  4. the data are insufficient
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Correct answer: (a) the particle has a constant acceleration

The slope of a velocity-time graph is the acceleration, and a straight line has a constant slope.

3.In a velocity-time graph the area under the graph is equal to the: (MDCAT 2024)

  1. speed of the object
  2. velocity of the object
  3. distance covered by the object
  4. acceleration of the object
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Correct answer: (c) distance covered by the object

The area is velocity multiplied by time, which is the distance covered.

4.A displacement time graph is a straight line inclined up at angle of 45° with X-axis, velocity of body according to this graph is: (SIBA MDCAT 2025)

  1. Increasing
  2. Decreasing
  3. Constant
  4. Decreasing at start and then may decrease
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Correct answer: (c) Constant

The slope of a displacement time graph is the velocity, and a straight line has a constant slope.

5.In velocity time graph the area under graph is equal to the: (UHS MDCAT 2024)

  1. Speed of an object
  2. Velocity of an object
  3. Distance covered by object
  4. Acceleration of an object
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Correct answer: (c) Distance covered by object

Velocity times time is distance, and that is the area under the graph.

6.What is the shape of velocity-time graph for constant acceleration? (UHS MDCAT 2023)

  1. Parabola line
  2. Straight line
  3. Incline curve
  4. Decline curve
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Correct answer: (b) Straight line

Constant acceleration means a constant slope, so the graph is a straight line.

7.The gradient of velocity time is equal to: (SZABMU MDCAT 2023)

  1. Distance
  2. Force
  3. Acceleration
  4. Speed
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Correct answer: (c) Acceleration

The slope of a velocity time graph is the acceleration.

8.Slope of distance time graph can never be: (SZABMU MDCAT 2023)

  1. Positive
  2. Negative
  3. Constant
  4. Zero
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Correct answer: (b) Negative

Distance can only grow, so the slope of the graph is never below zero.

9.The slope of a displacement-time graph is equal to: (NUMS MDCAT 2023)

  1. Velocity
  2. Displacement
  3. Acceleration
  4. Distance
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Correct answer: (a) Velocity

The slope of a displacement time graph is the velocity.

10.The velocity-time plot for a moving particle shows a straight line. This means: (UHS MDCAT 2023)

  1. The particle has a constant acceleration
  2. The particle has never turned around
  3. The particle has zero displacement
  4. The data in insufficient
Show answer

Correct answer: (a) The particle has a constant acceleration

A straight velocity time line has a constant slope, that is a constant acceleration.

11.In the displacement-time graph, if the slope is constant then the velocity is (UHS MDCAT 2023)

  1. Variable
  2. Constant
  3. May be variable or constant
  4. Infinite
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Correct answer: (b) Constant

The slope of a displacement time graph is the velocity, so a constant slope is a constant velocity.

12.The slope of distance – time graph will always be: (PMC MDCAT 2020)

  1. Negative
  2. Positive
  3. Zero
  4. Maximum
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Correct answer: (b) Positive

Distance can only grow, so the slope is never below zero.

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