PLTW

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Across
  1. 3. The tendency of an object to resist a change in rest or motion
  2. 6. The measurement of the rate and direction of motion
  3. 8. When the forces have equal strength and act in opposite directions
  4. 11. An invisible force that pulls objects toward each other
  5. 12. A change in speed or direction
  6. 13. A substance capable of reducing friction, heat, and wear
  7. 15. force A force that does not require objects to touch
  8. 16. The strength or force gained by motion
Down
  1. 1. The force acting on an object due to gravity
  2. 2. A unit of force
  3. 4. A push or a pull on an object
  4. 5. The sum of the forces acting on an object
  5. 7. The amount of matter in an object
  6. 9. force A force that results in 2 objects touching
  7. 10. The force between 2 objects that are touching
  8. 14. When the forces have unequal strength and act in opposite directions