Physics review

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Across
  1. 7. How hard it is to stop an object
  2. 8. causes a change in energy
  3. 9. occurs when objects are in contact and have relative motion
  4. 13. Energy from an objects height
  5. 14. heat is a _______ force
  6. 15. Energy in the nucleus of atoms
  7. 16. Constant velocity means no _______.
  8. 17. Energy from a material that is stretched or compressed
  9. 18. Gravity is a _______ force
  10. 19. Energy associated with heat
Down
  1. 1. Energy in the bonds of molecules
  2. 2. maximum displacement from equilibrium state
  3. 3. complete oscillations per second
  4. 4. the inward force required to keep an object moving in a circular path
  5. 5. Static friction is almost always _____ than kinetic friction
  6. 6. free fall, but generally with a horizontal component
  7. 10. Momentum can be negative because ____ can be negative
  8. 11. opposites _____
  9. 12. resources that cannot be replaced in a short period of time. Most are burned to produce electricity.
  10. 14. at what degree must an angle be for work to be 0?