Momentum Pool

Drag to flick a mass across a frictionless table and use collisions to pocket the targets. Toggle the physics between elastic (bouncy, energy-conserving) and inelastic (sticky, energy-absorbing) to solve each layout.

• Drag to aim and set the strength of your flick, then release
• Choose elastic or inelastic collisions to fit the shot
• Pocket the target masses to clear the table
• Advance through levels; retry a shot whenever you need

• Elastic vs inelastic collision toggle for every shot
• Daily run or Practice run across the levels

• Desktop: drag to aim and release to flick; click to switch collision type
• Phone & tablet: drag to aim and tap to toggle elastic or inelastic

• Elastic hits pass momentum cleanly, great for billiard-style chains
• Inelastic hits absorb energy and stick, handy for stopping dead on a pocket
• Aim through the contact point: hit a target so it heads straight for its pocket

Momentum Pool is a frictionless-table puzzle about momentum, energy and the difference between elastic and inelastic collisions.

• Skills: momentum, conservation of momentum, energy, collisions
• Best for: roughly grades 8–12 (ages 13+)
• For parents & teachers: collision physics you can see and predict.

Flicking a mass across a frictionless table and toggling between elastic and inelastic collisions is momentum conservation with energy as the variable.

Letting you switch the physics mid-game is the original device.

The comparison is the lesson. Momentum is conserved in both cases; kinetic energy only in the elastic one — so sticky collisions lose energy while still obeying the same conservation law, which is exactly the distinction that makes people think momentum and energy are the same thing.

Momentum Pool is a frictionless-table physics puzzle about momentum, energy and collision types. It's an original, free browser game built in-house for PlayPendium.

A free, original browser game on PlayPendium. No download, no install.