Home › A-Level 9702 › Work, energy and power
AS · Topic 5

The currency of change.

Work as the transfer of energy by a force, the conservation of energy that ties every mechanics problem together, and the power that measures how fast that transfer happens. Watch kinetic and gravitational potential energy trade back and forth, and derive the formulae examiners love to ask for. The simulations, lessons and concept map are below.

Simulations · live
Interactive · live Work and power Push a load with a force over a displacement and watch work done build, then see power as the rate of working through P = W ÷ t and P = Fv. Loads only when you launch, so the page stays fast.
Interactive · live Energy conversion: kinetic and gravitational PE Drop or launch a mass and watch ½mv² and mgΔh swap back and forth while their sum stays fixed by conservation of energy. Loads only when you launch, so the page stays fast.
Paper 1 practice · live
Multiple choice · with worked solutions Paper 1 style multiple-choice questions A full topic set across work, conservation of energy, efficiency, power and the KE and GPE formulae, with worked solutions. Open practice →
Lessons · live
Work, energy conservation and power → Kinetic energy and gravitational potential energy →
Concept map
Open the concept map →