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Physics
Collision laboratory
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Collision table
Preparing the collision table…
Run options
s
Display
Kinetic energy
- pₓ
- 0 kg·m/s
Without walls, consider the momentum of all balls.
Play the model to record a collision.
Model notes
- Balls move on a frictionless plane. The engine finds the time of contact within each step, including multiple successive collisions.
- Elasticity is the coefficient of restitution along the contact normal. Kinetic energy is conserved only in perfectly elastic collisions; walls exert external impulses on the balls.
- The2D mode allows5–100% elasticity;0% is explored in1D or the inelastic mode. Sticking and tangential slipping are distinct models.
- Radii normally follow mass at constant spherical density. Constant radius changes the corresponding mass distribution and geometry; it does not give the balls equal masses.
- Before/after values are recorded at each collision event, not inferred from adjacent animation frames.