Five sections, 21 topics, 66 skills
Explore physics from kinematics to particle physics and special relativity. Kinematics is free end to end. Other topics reserve their final skill for Premium.
Mechanics
- KinematicsFreeDescribe motion: position, velocity, acceleration5 skills
- DynamicsExplain motion: forces, mass, friction3 skills
- Work & EnergyTrack energy: work, kinetic, potential, power4 skills
- Momentum & CollisionsCollisions and recoil: impulse and conservation5 skills
- Circular Motion & GravitationGoing in circles: centripetal force and orbits3 skills
- Simple Harmonic MotionBack and forth: springs, pendulums, amplitude3 skills
- Rotational MotionSpinning things: torque, inertia, angular momentum3 skills
- FluidsPressure, floating and flow3 skills
Electricity & Magnetism
Waves & Optics
Thermodynamics
Modern Physics
Start with Kinematics
Download Physics Zen and practice the complete free Kinematics topic. Upgrade only when you want the full curriculum and exam paths.