Motion & forces
Speed, pushes, pulls and friction: what makes things start, stop and curve. Play first, then read how it works.
Game
Lessons
Short reads with pictures. Many have a live experiment built in.
What is physics? You already know some
Physics is the science of how everything moves, changes and works. Start here if you are brand new.
Measuring the world: metres, kilograms and seconds
Scientists use numbers and units to describe things. Meet the three units you will use all the time.
Speed, distance and time
How fast is fast? Learn the one simple rule that links speed, distance and time.
Forces: pushes and pulls
Every time something starts moving, stops, or changes direction, a force is at work. See how forces balance.
Friction: the grabby force
Why things slow down and stop, why shoes grip, and why rubbing your hands together makes them warm.
Why things keep moving: inertia
Why you lurch forward when a bus brakes, and the first of Newton’s three laws of motion.
Push harder, go faster: force, mass and acceleration
Why an empty shopping trolley speeds up faster than a full one. Newton’s second law in plain words.
Every push has a push back
How a balloon rocket works, why you slide backwards when you push a wall on ice, and Newton’s third law.
Why 45° throws the farthest
Every throw splits its speed between going up and going forward. Find the perfect split.
Activity guides
Hands-on activities for home, class or self-study.