physics mystery

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Across
  1. 1. The amount of matter in an object
  2. 6. Energy of motion
  3. 7. Speed of an object in a specific direction
  4. 8. A measure of the force of gravity on an object
  5. 9. Tendency of an object to resist a change in motion
  6. 10. The SI unit for force
  7. 12. Stored energy due to position
  8. 14. To exert force to move something away from yourself
  9. 16. To exert force to move something toward yourself
  10. 18. A push or pull on an object
  11. 19. The ability to do work
Down
  1. 1. An object's change in position over time
  2. 2. The rate at which velocity changes
  3. 3. The line or course along which something moves
  4. 4. Force that pulls things toward the center of the Earth
  5. 5. A force that opposes motion between surfaces
  6. 11. Energy used when a force moves an object
  7. 13. Force exerted by a person or machine
  8. 15. Measures how fast an object is moving in a given amount of time
  9. 17. The combination of all forces acting on an object