On the bench · not built yet

Field Lines

Place masses and charges and see gravitational and electric fields; compare the inverse square laws.

Nearby on the shelf

Move a character to match a target position or velocity graph; beat your best time.

Push cargo in zero-g, on ice and on carpet; F = ma becomes a game of precision.

Elastic and inelastic collisions on an air track; conserve momentum and design a crumple zone.