Physics Crossword Puzzle

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Across
  1. 2. Energy added by an external source (usually a person or machine), by applying a force in the direction of motion
  2. 4. Actively pushing off air (Often generated by a helicopter with spinning blades or a rocket burning fuel)
  3. 7. Resistance due to moving through air
  4. 8. Pull by a rope, string or cable
  5. 11. Energy stored due to elevation
  6. 12. Energy transferred to a non-useful form (most often heat), caused by a force opposite the direction of motion
  7. 13. Energy stored in a stretched or compressed material
  8. 15. An object's change in velocity each second
Down
  1. 1. Surface resistance
  2. 3. Describes how far an object moved
  3. 5. Distance from the center (of a circle, curve or rotation)
  4. 6. Energy of motion
  5. 9. How fast an object is moving
  6. 10. Gravitational pull of the earth
  7. 14. How much stuff (protons, neutrons & electrons) an object is made of