Exercise 1 — IGCSE 0653 May/Jun 2023 Paper 41 Q6
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weight
Cambridge IGCSE·Combined Sciences 0653·Physics
Forces
Key knowledge — Forces
Formulas & equations
Weight = mass × gravitational field strength (W = mg)Newton's 2nd law: F = maMoment = force × perpendicular distance from pivotPressure = force ÷ area (P = F/A)Hooke's law: F = kx (extension proportional to force, up to elastic limit)Momentum = mass × velocity (p = mv)Impulse = force × time = change in momentum (Ft = Δmv)
Key facts & rules
- Newton's 1st law: object stays at rest or constant velocity unless acted on by a net force.
- Newton's 3rd law: every action has an equal and opposite reaction (different objects, same type of force).
- Terminal velocity: when drag force = weight → net force = 0 → constant velocity.
- Principle of moments: for equilibrium, sum of clockwise moments = sum of anticlockwise moments.
- Centre of gravity: point where weight acts. Lower CG = more stable.
- Friction: force opposing relative motion between surfaces.
IGCSE Physics — Forces
13 Cambridge IGCSE 0653 Combined Sciences past paper questions on forces, across Theory, Multiple Choice and Alternative to Practical.
About Forces on IGCSE 0653
Forces can change the speed or direction of motion. Newton's three laws describe how forces and motion are related. Turning effects (moments) and equilibrium are also key themes in this topic.
What's covered:
- Newton's first, second and third laws
- Mass, weight and gravitational field strength
- Resultant forces and equilibrium
- Friction, tension and drag
- Moments and the principle of moments
- Hooke's law and springs
- Terminal velocity
Theory
Forces — Extended1 · Paper 4
Multiple choice
Forces — Core MCQ3 · Paper 1
Question 1 — IGCSE 0653 Mar 2024 Paper 12 Q27
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Correct answer: C
Question 2 — IGCSE 0653 Mar 2024 Paper 12 Q28
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Correct answer: C
Question 3 — IGCSE 0653 Mar 2024 Paper 12 Q29
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Correct answer: B
Forces — Extended MCQ8 · Paper 2
Question 1 — IGCSE 0653 May/Jun 2023 Paper 21 Q29
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Correct answer: D
Question 2 — IGCSE 0653 May/Jun 2023 Paper 21 Q30
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Correct answer: C
Question 3 — IGCSE 0653 May/Jun 2023 Paper 21 Q31
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Correct answer: B
Question 4 — IGCSE 0653 May/Jun 2024 Paper 23 Q28
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Correct answer: B
Question 5 — IGCSE 0653 May/Jun 2024 Paper 23 Q29
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Correct answer: A
Question 6 — IGCSE 0653 May/Jun 2025 Paper 21 Q28
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Correct answer: C
Question 7 — IGCSE 0653 May/Jun 2025 Paper 21 Q29
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Correct answer: C
Question 8 — IGCSE 0653 May/Jun 2025 Paper 21 Q30
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Correct answer: A
Alternative to practical
Forces — ATP1 questions
Exercise 1 — IGCSE 0653 May/Jun 2024 Paper 63 Q4
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1.85
All Forces questions in this collection
| Type | Level | Paper | Session | Q# | Marks | Answer / key |
|---|---|---|---|---|---|---|
| ATP | Extended | Paper 63 | May/Jun 2024 | Q4 | 13 marks | 1.85 |
| MCQ | Core | Paper 12 | Mar 2024 | Q27 | 1 mark | C |
| MCQ | Core | Paper 12 | Mar 2024 | Q28 | 1 mark | C |
| MCQ | Core | Paper 12 | Mar 2024 | Q29 | 1 mark | B |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q29 | 1 mark | D |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q30 | 1 mark | C |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q31 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2024 | Q28 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2024 | Q29 | 1 mark | A |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q28 | 1 mark | C |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q29 | 1 mark | C |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q30 | 1 mark | A |
| Theory | Extended | Paper 41 | May/Jun 2023 | Q6 | 10 marks | weight |