IGCSE Practice

Cambridge IGCSE·Co-ordinated Sciences 0654·Physics Density
📋Key knowledge — Forces

Formulas & equations

  • Weight = mass × gravitational field strength (W = mg)
  • Newton's 2nd law: F = ma
  • Moment = force × perpendicular distance from pivot
  • Pressure = 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 — Density

28 Cambridge IGCSE 0654 questions on density, across all three components.

About density on IGCSE 0654

Every Cambridge IGCSE Co-ordinated Sciences 0654 question on density (Forces, Physics), across all three exam components. Theory and alternative-to-practical come with full mark schemes; multiple choice is interactive — click an option to check it.

Theory

Papers 3 & 4 · 3 questions · Structured written questions, each with its full mark scheme.
Density — Core theory questions1 total · Paper 3

Exercise 1 — IGCSE 0654 Mar 2024 Paper 32 Q3

Cambridge past paperCore9 marks Paper 32Mar 2024
IGCSE 0654 Mar 2024 Paper 32 Question 3 — Density
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Mark scheme for IGCSE 0654 Mar 2024 Paper 32 Q3
Density — Extended theory questions2 total · Paper 4

Exercise 2 — IGCSE 0654 Jun 2022 Paper 43 Q3

Cambridge past paperExtended11 marks Paper 43Jun 2022
IGCSE 0654 Jun 2022 Paper 43 Question 3 — Density
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Mark scheme for IGCSE 0654 Jun 2022 Paper 43 Q3

Exercise 3 — IGCSE 0654 Nov 2022 Paper 43 Q6

Cambridge past paperExtended8 marks Paper 43Nov 2022
IGCSE 0654 Nov 2022 Paper 43 Question 6 — Density
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Mark scheme for IGCSE 0654 Nov 2022 Paper 43 Q6
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Multiple choice

Papers 1 & 2 · 25 questions · Click an option (A–D) to check your answer instantly.
Density — Core multiple choice questions16 total · Paper 1

Exercise 1 — IGCSE 0654 Oct/Nov 2025 Paper 11 Q28

Cambridge past paperCore1 mark Paper 11Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 11 Question 28 — Density
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Correct answer: B

Exercise 2 — IGCSE 0654 May/June 2025 Paper 12 Q19

Cambridge past paperCore1 mark Paper 12May/June 2025
IGCSE 0654 May/June 2025 Paper 12 Question 19 — Density
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Correct answer: C

Exercise 3 — IGCSE 0654 March 2025 Paper 12 Q29

Cambridge past paperCore1 mark Paper 12March 2025
IGCSE 0654 March 2025 Paper 12 Question 29 — Density
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Correct answer: A

Exercise 4 — IGCSE 0654 Oct/Nov 2025 Paper 12 Q29

Cambridge past paperCore1 mark Paper 12Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 12 Question 29 — Density
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Correct answer: D
Density — Extended multiple choice questions9 total · Paper 2

Exercise 5 — IGCSE 0654 Oct/Nov 2025 Paper 21 Q22

Cambridge past paperExtended1 mark Paper 21Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 21 Question 22 — Density
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Correct answer: D

Exercise 6 — IGCSE 0654 Oct/Nov 2025 Paper 21 Q28

Cambridge past paperExtended1 mark Paper 21Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 21 Question 28 — Density
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Correct answer: D

Exercise 7 — IGCSE 0654 May/June 2025 Paper 23 Q21

Cambridge past paperExtended1 mark Paper 23May/June 2025
IGCSE 0654 May/June 2025 Paper 23 Question 21 — Density
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Correct answer: D

Exercise 8 — IGCSE 0654 May/June 2025 Paper 23 Q31

Cambridge past paperExtended1 mark Paper 23May/June 2025
IGCSE 0654 May/June 2025 Paper 23 Question 31 — Density
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Correct answer: D
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