Roller Coaster

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Across
  1. 1. the ability of a body to do work
  2. 5. what holds the roller coaster
  3. 8. the energy stored by an object ready to be used
  4. 11. anything that reduces the amount of force needed to move an object
  5. 12. use friction to stop a vehicle
  6. 13. the force of gravity or acceleration on a body
  7. 14. what the cart sits on
  8. 16. a force caused by a rubbing motion between two objects
  9. 18. machine designed to convert one or more forms of energy into mechanical energy
  10. 19. the energy of an objects in motion
Down
  1. 2. the force that attracts a body toward the center of the earth
  2. 3. how fast an object moves
  3. 4. how quickly an object speeds up, slows down or changes direction
  4. 5. first roller coaster
  5. 6. a twisting force
  6. 7. used to keep the rider safe
  7. 9. an object in motion will stay in motion unless acted upon
  8. 10. a combination of speed and direction an object travels
  9. 15. what the people ride in
  10. 17. the tendency of something to stay in motion or at rest