top of page
Work & Power
Introduction
Work and power describe how energy is transferred when forces act on objects. This topic introduces the relationship between force, distance, energy and time, enabling students to calculate the work done by forces and the rate at which energy is transferred. These concepts are widely applied throughout mechanics and are essential for analysing the efficiency and performance of physical systems.
AQA A Level Physics Specification: 3.4.2.3 Work, Energy and Power
What You Need to Know
-
Define work done as the energy transferred by a force.
-
Calculate work done using force and displacement in the direction of the force.
-
State the unit of work and energy (joule, J).
-
Define power as the rate of energy transfer or the rate of doing work.
-
Calculate power using work done and time.
-
Calculate power using force and velocity.
-
Understand the relationship between work done, kinetic energy and gravitational potential energy.
-
Solve quantitative problems involving work, energy and power.
Downloadable Topic Pack
Work and Power Topic Pack Exam Questions and Answers
Related Topics
-
Newton's Laws
-
Kinetic Energy
-
Gravitational Potential Energy
-
Efficiency
-
Momentum
Testimonials
Success Stories
Gurpreet S
Claire T.
With Sarah's help my daughter managed to gain an A* in her Physics A Level exams (almost 100% on paper 2!) and was able to gain entry to UCL. We are so proud and cannot thank Sarah enough.
Sarah transformed my daughter's approach to Physics. Her examiner insight was invaluable for boosting her final GCSE grade from a 7 to a 9.
S. Ahmed
Professional and encouraging, Sarah's expert coaching helped my son gain admission to Cambridge to study Natural Sciences. Highly recommended.
James R.
The small group sessions are fantastic. They provided the targeted exam practice and confidence my twins needed to excel.
bottom of page