Theme A: Space, time and motion

IB Physics A.3 Work, energy and power: practice questions and video explanations

Work done by a force, kinetic, gravitational and elastic potential energy, conservation of energy, power and efficiency.

SL and HLFree to practise

What you need to know for A.3 Work, energy and power

  • Calculate work done, including from the area under a force-displacement graph
  • Use kinetic, gravitational potential and elastic potential energy
  • Apply the principle of conservation of energy, with Sankey diagrams
  • Use power as rate of doing work and P = Fv
  • Calculate efficiency and the energy density of fuels

A.3 Work, energy and power questions in the question bank

Exam-style questions
19
Multiple choice (Paper 1A style)
14
Structured (Paper 1B and 2 style)
5
Free to try
19

Every question has a mark scheme. Multiple-choice answers are marked instantly, and for structured questions you open the mark scheme part by part and award yourself the marks you earned. Most questions also have a step-by-step video explanation presented by an IB teacher or a former IB student.

Practise A.3 (SL)Practise A.3 (HL)

Try a free A.3 Work, energy and power question

Real questions from the question bank. Choose an answer and check it, then see the mark scheme and the video explanation.

Free question · 1 of 5Topic A.3Paper 1 styleMedium
Which change produces the largest percentage increase in the maximum theoretical power output of a wind turbine?
Choose your answer

More from theme A: Space, time and motion

Full practice papers

When you have practised by topic, sit a full SL or HL mock exam with Paper 1A, Paper 1B and Paper 2, or see every IB Physics topic.