IB skill practice

Analyse work, energy, power, and efficiency

Paper 1, Paper 2 5 marks Difficulty 4

Useful energy from efficiency

A system in a solar car drivetrain test receives \(460\,\text{J}\) and has efficiency \(67\%\). Calculate the useful output energy. Read the diagram before calculating the requested value. Enter the numerical result and choose the interpretation that matches the physics meaning.

Worked practice: physics data and result

Read the physical quantities first, then calculate the result and state what it means.