Unit 2 Vocabulary Terms

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Across
  1. 3. objects sliding past eachother
  2. 4. the force of gravity, the electromagnetic force, the strong nuclear force, and the weak nuclear force
  3. 6. to explain acceleration
  4. 8. an object to resist of motion
  5. 9. a force that opposes motion between two surfaces
  6. 11. objects that touch each other
  7. 12. the amount of gravitational pull on earth
  8. 17. explaining the conservation of momentum
  9. 19. friction between two surfaces in movement
  10. 20. when earth's gravity is the only force acting on an object
Down
  1. 1. all objects in the universe attract through the force of gravity
  2. 2. friction between two surfaces that are stationary
  3. 5. a rounded object rolling from a flat surface
  4. 7. the combination of all forces acting
  5. 10. measured as a product of its mass and velocity
  6. 13. the constant speed that a free falling object eventually reaches
  7. 14. to explain action-reaction
  8. 15. a push or pull
  9. 16. to explain inertia
  10. 18. objects that don't require touch