physics

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Across
  1. 4. 9.81 m/s2
  2. 7. energy energy of motion
  3. 8. unit of energy
  4. 9. when an object falls, its potential energy_________
  5. 12. an object's resistance to change its motion
  6. 13. can't be destroyed or made
  7. 14. speed in any direction
  8. 15. smallest particle of a substance that can exist by itself or be combined
Down
  1. 1. push or pull on an object
  2. 2. For an object to gain energy, ______ must be done on the object
  3. 3. fall when the pull of gravity on an object is unhindered
  4. 5. when an object gets further from the ground, it's potential energy __________
  5. 6. energy energy of position
  6. 10. the force of gravity on an object
  7. 11. unit of force