Table of contents

0. Math Review31m
- Math Review
  31m
1. Intro to Physics Units1h 29m
2. 1D Motion / Kinematics3h 56m
3. Vectors2h 43m
4. 2D Kinematics1h 42m
5. Projectile Motion3h 6m
6. Intro to Forces (Dynamics)3h 22m
7. Friction, Inclines, Systems2h 44m
8. Centripetal Forces & Gravitation7h 26m
9. Work & Energy1h 59m
10. Conservation of Energy2h 54m
11. Momentum & Impulse3h 40m
12. Rotational Kinematics2h 59m
13. Rotational Inertia & Energy7h 4m
14. Torque & Rotational Dynamics2h 5m
15. Rotational Equilibrium3h 39m
16. Angular Momentum3h 6m
17. Periodic Motion2h 9m
18. Waves & Sound3h 40m
19. Fluid Mechanics4h 27m
20. Heat and Temperature3h 7m
21. Kinetic Theory of Ideal Gases1h 50m
22. The First Law of Thermodynamics1h 26m
23. The Second Law of Thermodynamics3h 11m
24. Electric Force & Field; Gauss' Law3h 42m
25. Electric Potential1h 51m
26. Capacitors & Dielectrics2h 2m
27. Resistors & DC Circuits3h 8m
28. Magnetic Fields and Forces2h 23m
29. Sources of Magnetic Field2h 30m
30. Induction and Inductance3h 38m
31. Alternating Current2h 37m
32. Electromagnetic Waves2h 14m
33. Geometric Optics2h 57m
34. Wave Optics1h 15m
35. Special Relativity2h 10m

2. 1D Motion / Kinematics

Conceptual Problems with Position-Time Graphs

Physics

2. 1D Motion / Kinematics

Conceptual Problems with Position-Time Graphs

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Multiple Choice

Chapter 8: Which one of the following statements about position-time graphs is not true?

A straight line on a position-time graph indicates constant velocity.

A horizontal line on a position-time graph indicates zero velocity.

A curved line on a position-time graph indicates changing velocity.

The slope of a position-time graph represents acceleration.

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Verified step by step guidance

Understand the concept of a position-time graph: A position-time graph plots the position of an object on the y-axis against time on the x-axis. It visually represents how the position of an object changes over time.

Analyze the statement about a straight line: A straight line on a position-time graph indicates constant velocity. This is true because the slope of the line represents the velocity, and a constant slope means constant velocity.

Evaluate the statement about a horizontal line: A horizontal line on a position-time graph indicates zero velocity. This is true because the position does not change over time, meaning the object is stationary.

Consider the statement about a curved line: A curved line on a position-time graph indicates changing velocity. This is true because the slope of the curve changes, indicating acceleration or deceleration.

Examine the statement about the slope representing acceleration: The slope of a position-time graph represents velocity, not acceleration. Acceleration is represented by the change in the slope of a velocity-time graph, not a position-time graph.