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  1. What happens when a ball rolls down a ramp? - Physics Network

  2. Balls Rolling Down the Ramp | Physics Van | Illinois

  3. Why perpetual motion machine wouldn't work. - Physics Forums

  4. Rolling Race - Scientific American

  5. Why does the ball go faster from a higher ramp? - Physics Network

  6. Ramps: Sliding vs Rolling - PhysicsLAB

  7. Ball Rolling Down Inclined Plane - UCSC

  8. A Race: Rolling Down a Ramp - Boston University

  9. LAB 4 - PHYSICS - Weebly

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