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Learn physics through interactive missions, clear explanations, and practice that builds real understanding.
Interactive lessons build real understanding — clear visuals over memorised formulas, with a quick “what to remember” on every idea.
Exam-style questions with instant feedback — and a full worked solution the moment you answer, so you see exactly why.
Play with a live simulation and watch the physics move — change the variables and see cause and effect for yourself.
Physiworld resurfaces what you got wrong until it sticks — then a fresh daily challenge lets you climb a live leaderboard.
For students, teachers, and anyone curious about physics
"Something like Duolingo but with physics. It was boring for me in high school — this actually got me interested."
"Learning physics is awful; this tool makes it much easier — and dare I say fun!"
"Thoroughly impressed with how engaging it was and simple to use. Will definitely be using it more."
"Looks and feels fun yet professional. I’m not in science and still learned a thing or two within the first few clicks."
"A cool and effective way to teach students physics."
"A bit like Brilliant, but more specific about physics. Feels just like the lab simulations from my physics labs."
"Just made an account and was surprised by how good it is — exactly the tool I’d been looking for before my course starts."
"Understanding physics concepts is hard. Gamifying the fundamentals will really help students who struggle."
"The simulations are pretty fun — solid for a free physics site."
"YouTube videos weren’t cutting it — way too much effort to find the useful parts. This is exactly what I needed."
"Something like Duolingo but with physics. It was boring for me in high school — this actually got me interested."
"Learning physics is awful; this tool makes it much easier — and dare I say fun!"
"Thoroughly impressed with how engaging it was and simple to use. Will definitely be using it more."
"Looks and feels fun yet professional. I’m not in science and still learned a thing or two within the first few clicks."
"A cool and effective way to teach students physics."
"A bit like Brilliant, but more specific about physics. Feels just like the lab simulations from my physics labs."
"Just made an account and was surprised by how good it is — exactly the tool I’d been looking for before my course starts."
"Understanding physics concepts is hard. Gamifying the fundamentals will really help students who struggle."
"The simulations are pretty fun — solid for a free physics site."
"YouTube videos weren’t cutting it — way too much effort to find the useful parts. This is exactly what I needed."
"Quick, simple problems that help me step up to the harder ones my professor gives out."
"Interactive tools can make complex subjects like physics way more engaging. Definitely using it for my studies."
"The visuals really helped me understand — I’ll be using this site regularly for help."
"Made an account already — looks great!"
"You can find yourself just browsing away — there’s a lot to go through."
"I haven’t seen many interactive physics websites. Pretty cool concept."
"Saved it for my A-level physics revision."
"Nice visual effects — the demo looks promising."
"Love it. Keep up the good work."
"Quick, simple problems that help me step up to the harder ones my professor gives out."
"Interactive tools can make complex subjects like physics way more engaging. Definitely using it for my studies."
"The visuals really helped me understand — I’ll be using this site regularly for help."
"Made an account already — looks great!"
"You can find yourself just browsing away — there’s a lot to go through."
"I haven’t seen many interactive physics websites. Pretty cool concept."
"Saved it for my A-level physics revision."
"Nice visual effects — the demo looks promising."
"Love it. Keep up the good work."
Understand the physics, practise real exam questions, and see exactly where every mark comes from.
A trolley speeds up from 2 m/s to 8 m/s in 3 s. Calculate its acceleration. [3]
Understand each idea before you memorise a formula.
Tagged Core & Supplement, marked the moment you answer.
See exactly where every mark comes from.
Original questions aligned to the Cambridge IGCSE 0625 syllabus, with practice that also prepares you for GCSE, AP Physics 1 and NGSS-aligned courses. Physiworld is not affiliated with Cambridge Assessment or the College Board. AP is a registered trademark of the College Board.
Every simulation you run, every quiz you complete — it all counts toward a shared goal.
Sign in to see your rank and contribute to this week's goal!
Type a calculation and press enter — the free calculator solves it with full step-by-step working. No sign-up required.
Create a class, share one code, and your students land on a private weekly leaderboard. Built for IGCSE, GCSE, AP Physics and NGSS.
Rolling out class codes across a department or want a walkthrough? Email us — we’ll help you set it up.
40 exam-style challenges across 10 topics — each one a real problem to crack, not a fact to memorise. Solve them to earn XP, climb the leaderboard, and prove you actually understand the physics. A fresh challenge drops every day.
Everything you need to know about Physiworld.
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