AQA GCSE Physics · 8463

Changes in energy

What you need to know

Calculate the amount of energy associated with a moving object, a stretched spring, and an object raised above ground level.
Calculate the kinetic energy of a moving object using the equation: $E_k = \frac{1}{2} m v^2$

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Changes in energy
6 key terms

Practise with past papers Key terms & definitions

Previous subtopicEnergy stores and systems Next subtopicEnergy changes in systems

21mv2

Calculate the amount of elastic potential energy stored in a stretched spring (assuming the limit of proportionality is not exceeded) using the equation:

E_e = \frac{1}{2} k e^2

Calculate the amount of gravitational potential energy gained by an object raised above ground level using the equation:

E_p = m g h