What’s New
Every new lesson, simulation, video, practice set and platform update, newest first.
- LessonNew
AS Momentum: 7 one-page cheat sheets
A printable page for every Chapter 6 lesson: momentum, conservation, elastic and inelastic collisions, explosions, 2D collisions and Newton’s laws.
- LessonNew
AS Accelerated motion: 14 one-page cheat sheets
A printable page for every Chapter 2 lesson: acceleration, v–t graphs, suvat and their derivation, free fall, measuring g and projectiles.
- LessonNew
AS Kinematics: a one-page cheat sheet for every lesson
Eight printable one-page sheets for Chapter 1, from speed to scalars and vectors: key equations, a worked sample and four practice problems each.
- LessonNew
A Level Coulomb’s law cheat sheet
Electric field and potential of point charges, combining charges, the neutral point and the gravity comparison, with worked samples and 10 practice problems.
- LessonNew
A Level Gravitational fields cheat sheet
Field strength, potential and orbits: derivations of g = GM/r², φ = −GM/r and T² ∝ r³, geostationary orbits, worked samples and 10 practice problems.
- LessonNew
A Level Circular motion cheat sheet
Horizontal circles and banked tracks, vertical circles and the conical pendulum: derivations, key equations, worked samples and 10 practice problems.
- LessonNew
Printable revision cheat sheets
The first one is IGCSE Circular motion: definitions, equations, hand-drawn diagrams, a worked example and quick recall, with A4 and Letter PDFs.
- PlatformNew
Dark mode
Switch between light, dark or your device’s setting from the navbar. Simulations and diagrams change with it.
- PracticeNew
40 harder Coulomb's law questions
A new Challenging tier, including 23 suspended-charge problems with free-body diagrams. Now in the A Level and IB banks too.
- PracticeNew
440 new AS Level Kinematics questions
A fresh, tier-ordered 20-question bank for every lesson in Chapters 1–2 (Kinematics and Accelerated motion), most with a worked figure.
- PlatformNew
A site-wide “Need help?” button
Request a video walkthrough of any question, or book a 1-on-1 tutoring session, from wherever you are on the site.
- PlatformFix
Fixed a crash on the receipt upload page
Uploading a payment receipt no longer fails when the paid-courses table is unavailable.