Mass, spring, and momentum.

Mass, spring, and momentum — sheets, ropes, and decks you can actually throw.

• KQ-203 · GOOEY/BLOBCALIBRATED

  Metaballs that chase the pointer, merging and splitting.Run specimen

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• KQ-204 · PLINKO/DROPCALIBRATED

  Pegs scatter the drops; the bins bell out.Run specimen

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• KQ-044 · PENDULUM/WAVECALIBRATED

  Periods that part, then realign.Run specimen

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• KQ-043 · TETHER/ROPECALIBRATED

  Grab the cord; Verlet does the rest.Run specimen

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• KQ-038

  Triage Deck

  Flick to accept, flick to reject.

• KQ-043

  Tether Rope

  Grab the cord; Verlet does the rest.

• KQ-044

  Pendulum Wave

  Periods that part, then realign.

• KQ-045

  Rubber Sheet

  Pull the membrane; it rings back.

• KQ-056

  Pull to Refresh

  Pull past the detent; rows cascade in.

• KQ-202

  Newton's Cradle

  The end ball pops out; the middle holds still.

• KQ-203

  Gooey Blob

  Metaballs that chase the pointer, merging and splitting.

• KQ-204

  Plinko Drop

  Pegs scatter the drops; the bins bell out.