Start learning physics, free.
Learn vectors by drawing them interactively
Learn how to convert units, with automatic unit canceling. Get practice with prefixes (e.g. kilo, milli, centi) and convert between meters and feet, ounces and grams, and more.
Improve your understanding of displacement, velocity, and acceleration graphs
Learn the difference between position and displacement, speed vs velocity through freeze-frame motion diagrams
Understand forces such as tension, friction, normal force, and practice drawing free-body diagrams interactively
