Distance-Time Graphs — GCSE Physics Revision
Revise Distance-Time Graphs for GCSE Physics. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
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Go to Velocity-Time GraphsWhat is Distance-Time Graphs?
A distance-time graph plots the distance an object has travelled against time. The gradient (steepness) of the line represents the object's speed. A horizontal line means the object is stationary, a straight, sloping line indicates constant speed, and a curved line shows that the speed is changing (acceleration or deceleration).
Board notes: Covered by all major boards (AQA, Edexcel, OCR). Interpreting these graphs is a key skill, including calculating speed from the gradient.
Step-by-step explanationWorked example
A distance-time graph shows that an object travels 30 metres in 10 seconds at a constant speed. What is its speed? Solution: The speed is the gradient of the graph. Speed = Distance / Time = 30m / 10s = 3 m/s.
Mini lesson for Distance-Time Graphs
1. Understand the core idea
A distance-time graph plots the distance an object has travelled against time. The gradient (steepness) of the line represents the object's speed.
Can you explain Distance-Time Graphs without copying the notes?
2. Turn it into marks
A distance-time graph shows that an object travels 30 metres in 10 seconds at a constant speed. What is its speed?
Underline the method, evidence, or command-word move that would earn credit in GCSE Forces.
3. Fix the likely mark leak
Watch for this mistake: Confusing a distance-time graph with a velocity-time graph. The interpretation of the gradient and the shape of the lines are different.
Write one correction rule before doing another practice question.
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Distance-Time Graphs practice questions
These are original StudyVector questions for revision practice. They are not official exam-board questions.
Question 1
In one GCSE sentence, explain what Distance-Time Graphs is testing.
Answer: A distance-time graph plots the distance an object has travelled against time. The gradient (steepness) of the line represents the object's speed.
Mark focus: Precise definition and topic focus.
Question 2
A Distance-Time Graphs question uses an unfamiliar context. What should the answer do before adding detail?
Answer: It should name the process, variable, equation, particle model, or evidence being tested, then explain the result using precise scientific vocabulary.
Mark focus: Method selection and command-word control.
Question 3
A student makes this mistake: "Confusing a distance-time graph with a velocity-time graph. The interpretation of the gradient and the shape of the lines are different." What should their next repair task be?
Answer: Do one Distance-Time Graphs question and review the mistake type.
Mark focus: Error correction and next-step practice.
Distance-Time Graphs flashcards
Core idea
What is the main idea in Distance-Time Graphs?
A distance-time graph plots the distance an object has travelled against time. The gradient (steepness) of the line represents the object's speed.
Common mistake
What mistake should you avoid in Distance-Time Graphs?
Confusing a distance-time graph with a velocity-time graph. The interpretation of the gradient and the shape of the lines are different.
Practice
What is one useful practice task for Distance-Time Graphs?
Answer one Distance-Time Graphs question and review the mistake type.
Exam board
How should you use board notes for Distance-Time Graphs?
Covered by all major boards (AQA, Edexcel, OCR). Interpreting these graphs is a key skill, including calculating speed from the gradient.
Common mistakes
- 1Confusing a distance-time graph with a velocity-time graph. The interpretation of the gradient and the shape of the lines are different.
- 2Thinking a horizontal line means the object is moving at a constant speed. On a distance-time graph, it means the distance is not changing, so the object is stationary.
- 3Calculating the gradient incorrectly. Gradient is the change in the vertical axis (distance) divided by the change in the horizontal axis (time).
Distance-Time Graphs exam questions
Exam-style questions for Distance-Time Graphs with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP specifications.
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Distance-Time Graphs
Core concept
A distance-time graph plots the distance an object has travelled against time. The gradient (steepness) of the line represents the object's speed. A horizontal line means the object is stationary, a s…
Frequently asked questions
What does a curved line on a distance-time graph mean?
A curved line indicates that the speed is changing. If the gradient is increasing (the line is getting steeper), the object is accelerating. If the gradient is decreasing (the line is getting flatter), the object is decelerating.
How do you find the speed of an object at a specific point on a curved distance-time graph?
To find the instantaneous speed at a point on a curve, you need to draw a tangent to the curve at that point and then calculate the gradient of the tangent.