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ForceForge — a physics world of motion, forces and collisions

🎓 Ages 15–18 · Grades 9–12 · Physics

ForceForge

Physics clicks when you predict what will happen and then check yourself. Read a scenario, commit to a number — a speed, a force, an energy — and a deterministic engine computes the real answer and shows the formula behind it. No jargon, nothing sent anywhere, and a wrong prediction is just where the intuition starts.

Open the Prediction Lab Open the Collision Lab

Start here

The Prediction Lab Read a scenario, commit to a number — a speed, a force, an energy — then a deterministic engine computes it exactly and walks the formula. The Collision Lab Two objects meet on a frictionless track. Predict BOTH final velocities, then see the momentum it always conserves — elastic or inelastic. Keep It Moving The impetus trap — predict what a coasting puck does once the push is gone, then a motion diagram shows Newton’s first law. Teach the Cast Teach a physics idea to a near-peer still learning it — teaching makes it stick.

All activities

Predict & compute

The Prediction Lab Predict a physics quantity across kinematics, forces, momentum, energy, circular motion or projectiles — a pure engine computes it exactly. The Collision Lab Predict both final velocities; watch momentum conserved and whether kinetic energy survives — heavier doesn’t always win. Keep It Moving Confront the “it needs a force to keep moving” misconception — a force changes motion, it isn’t needed to keep it.

Practice & teach

Teach the Cast A near-peer physicist is still learning a move — teach it and catch their misconception. Mixed Practice A short round across the kits you have played, brought back to review (spaced so it sticks). Progress Your levels and how each strand is coming along — saved only on this device.
Concept Kits — 16 kits of HS physics

Kinematics, Newton’s laws, friction, momentum, collisions, energy, circular motion, gravitation, SHM, waves, sound, electricity & magnetism. Hints when you want them; progress stays on this device.

Kit 1: Kinematics (1D) 1D kinematics — position, velocity, acceleration, and graphs · 25 questions Kit 2: Vectors & 2D Motion Vectors and two-dimensional (projectile) motion · 25 questions Kit 3: Newton's Laws Newton's laws of motion — net force and acceleration · 25 questions Kit 4: Friction & Forces Friction, normal force, and free-body analysis · 25 questions Kit 5: Momentum & Impulse Momentum and impulse · 25 questions Kit 6: Collisions Collisions and conservation of momentum · 25 questions Kit 7: Work & Energy Work, kinetic energy, and potential energy · 25 questions Kit 8: Conservation of Energy Conservation of energy — energy transforms, total conserved · 25 questions Kit 9: Circular Motion Circular motion and centripetal force · 25 questions Kit 10: Gravitation Universal gravitation and orbits · 25 questions Kit 11: Oscillation / SHM Oscillation and simple harmonic motion · 25 questions Kit 12: Waves Wave properties — wavelength, frequency, and speed · 25 questions Kit 13: Sound Sound — pitch, intensity, and resonance · 25 questions Kit 14: Electric Fields & Circuits Electric charge, current, and Ohm's law · 25 questions Kit 15: Magnetism & Induction Magnetism and electromagnetic induction · 25 questions Kit 16: Capstone: Predict the System Capstone — integrating forces and energy on real systems · 25 questions

Who you’ll meet

Not mascots — everyday physicists, each showing one idea in action. You’ll run into them across the lab and the kits.

  • Bexley — tracks position, velocity, and acceleration over time (kinematics)
  • Torin — balances the forces to find the acceleration (Newton’s laws)
  • Colt — conserves momentum through a collision
  • Suki — follows the energy — kinetic, potential, conserved (work & energy)
  • Koa — keeps the force pointed inward for circular motion
  • Elara — reads period, frequency, and wavelength (oscillation & waves)
  • Ravel — traces charge and current through a circuit
  • Bronte — links a changing field to an induced current (induction)
  • Marisol — the mentor — predict, compute, then reason about why

How it works

ForceForge trusts you — it’s about reasoning with the formulas, not memorizing them, and a wrong prediction is just a place to learn. Every answer is computed by a small deterministic engine (no server, nothing sent anywhere). Your progress is saved only on this device: no accounts, no ads.

More ways to play

Force Run