Newton's Laws (GCSE) — GCSE Physics Revision
Revise Newton's Laws (GCSE) 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 Stopping DistanceWhat is Newton's Laws (GCSE)?
Newton's three laws of motion describe the relationship between the motion of an object and the forces acting on it. The first law (inertia) states an object stays at rest or in uniform motion unless a resultant force acts on it. The second law states that the resultant force is equal to the mass times the acceleration (F=ma). The third law states that for every action, there is an equal and opposite reaction.
Board notes: A cornerstone of mechanics for all GCSE Physics boards (AQA, Edexcel, OCR).
Step-by-step explanationWorked example
A car of mass 1000kg accelerates at 2 m/s². What is the resultant force acting on the car? Solution: Using Newton's Second Law, F = ma. F = 1000kg x 2 m/s² = 2000 N.
Mini lesson for Newton's Laws (GCSE)
1. Understand the core idea
Newton's three laws of motion describe the relationship between the motion of an object and the forces acting on it. The first law (inertia) states an object stays at rest or in uniform motion unless a resultant force acts on it.
Can you explain Newton's Laws (GCSE) without copying the notes?
2. Turn it into marks
A car of mass 1000kg accelerates at 2 m/s². What is the resultant force acting on the car?
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: Misunderstanding the first law. An object moving at a constant velocity has zero resultant force acting on it, the same as an object at rest.
Write one correction rule before doing another practice question.
Practise this topic
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Newton's Laws (GCSE) 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 Newton's Laws (GCSE) is testing.
Answer: Newton's three laws of motion describe the relationship between the motion of an object and the forces acting on it. The first law (inertia) states an object stays at rest or in uniform motion unless a resultant force acts on it.
Mark focus: Precise definition and topic focus.
Question 2
A Newton's Laws (GCSE) 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: "Misunderstanding the first law. An object moving at a constant velocity has zero resultant force acting on it, the same as an object at rest." What should their next repair task be?
Answer: Do one Newton's Laws (GCSE) question and review the mistake type.
Mark focus: Error correction and next-step practice.
Newton's Laws (GCSE) flashcards
Core idea
What is the main idea in Newton's Laws (GCSE)?
Newton's three laws of motion describe the relationship between the motion of an object and the forces acting on it. The first law (inertia) states an object stays at rest or in uniform motion unless a resultant force...
Common mistake
What mistake should you avoid in Newton's Laws (GCSE)?
Misunderstanding the first law. An object moving at a constant velocity has zero resultant force acting on it, the same as an object at rest.
Practice
What is one useful practice task for Newton's Laws (GCSE)?
Answer one Newton's Laws (GCSE) question and review the mistake type.
Exam board
How should you use board notes for Newton's Laws (GCSE)?
A cornerstone of mechanics for all GCSE Physics boards (AQA, Edexcel, OCR).
Common mistakes
- 1Misunderstanding the first law. An object moving at a constant velocity has zero resultant force acting on it, the same as an object at rest.
- 2Confusing mass and weight in the F=ma equation. 'm' is the mass of the object in kg.
- 3Misinterpreting the third law. The action and reaction forces act on different objects, so they do not cancel each other out.
Newton's Laws (GCSE) exam questions
Exam-style questions for Newton's Laws (GCSE) 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 Newton's Laws (GCSE)
Core concept
Newton's three laws of motion describe the relationship between the motion of an object and the forces acting on it. The first law (inertia) states an object stays at rest or in uniform motion unless …
Frequently asked questions
What is inertia?
Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the greater its inertia.
What is an example of Newton's third law?
When you push against a wall (action), the wall pushes back on you with an equal and opposite force (reaction). Another example is a rocket expelling hot gases downwards (action), and the gases pushing the rocket upwards (reaction).