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The examples from Ordinate 2D, and scenes, parts, materials and scripts made by its users. All free: open one in the studio with one click.
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Script
Elastic collisions for every mass ratio
A moving ball hits balls of 0.25 to 8 times its mass; the speeds after against the formulas.
Recoil: Two Carts Pushed Apart
A spring pushes a 1 kg and a 3 kg cart apart. The total momentum stays zero: the light cart leaves three times as fast and takes three quarters of the energy.
Billiards: an Oblique Collision
A ball strikes an equal ball at rest off the centre line: the struck ball leaves along the line of centres, the other turns aside, and they part at exactly 90°.
Ballistic Pendulum
A 0.5 kg bullet at 30 m/s embeds in a 4 kg block on a rod: v = mu/(M+m) after the impact, then the swing rises h = v²/2g.
Perfectly Inelastic Collision
The same carts with e = 0: they move on together at 1 m/s. Momentum is conserved, a third of the kinetic energy is lost.
Elastic Collision
1 kg at 3 m/s hits 2 kg at rest: the velocities after are −1 and +2 m/s; momentum and kinetic energy are both conserved.
Recoil: Two Carts Pushed Apart
A spring pushes a 1 kg and a 3 kg cart apart. The total momentum stays zero: the light cart leaves three times as fast and takes three quarters of the energy.
Billiards: an Oblique Collision
A ball strikes an equal ball at rest off the centre line: the struck ball leaves along the line of centres, the other turns aside, and they part at exactly 90°.
Ballistic Pendulum
A 0.5 kg bullet at 30 m/s embeds in a 4 kg block on a rod: v = mu/(M+m) after the impact, then the swing rises h = v²/2g.
Perfectly Inelastic Collision
The same carts with e = 0: they move on together at 1 m/s. Momentum is conserved, a third of the kinetic energy is lost.
Elastic Collision
1 kg at 3 m/s hits 2 kg at rest: the velocities after are −1 and +2 m/s; momentum and kinetic energy are both conserved.
From the community
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