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World 3 · Energy & Momentum · 7 min · PRO

Elastic Collision

Equal masses swap velocity

PRO · Forces & Motion

World 3: Energy & Momentum is part of PRO

The first world of Forces & Motion is free. PRO opens the other 50 lessons in 11 worlds — simulations, quizzes and all.

  • Falling Energy
  • Impact Speed
  • Heavy Hits Light
  • Sticking Together
  • Momentum Is Conserved
PRO includes
  • All 26 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock Forces & MotionTry the free world
← Impact SpeedHeavy Hits Light →

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