Topic 4 Crossword Puzzle

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Across
  1. 2. both forces acting on the object are equal
  2. 5. a measure of the force of gravity on an object
  3. 7. a measure of the amount of matter in an object
  4. 9. what occurs when two solid surfaces slide across each other
  5. 10. the law that states the force of gravity acts between all objects in the universe that have mass
  6. 11. =mass x acceleration
  7. 12. the force two surfaces exert on each other when they rub against each other
  8. 13. this decreases as distance increases
  9. 15. what occurs when an object rolls across a surface
Down
  1. 1. the forces acting on an object are unequal
  2. 3. what occurs when a solid object moves through a fluid
  3. 4. =mass x acceleration due to gravity x height
  4. 6. what acts on an object when they are resting on a surface
  5. 8. the rate at which velocity changes
  6. 14. a non-contact force that pulls objects toward eachother