Science crossword

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Across
  1. 3. Two forces that have that are equal in newtons
  2. 6. The sum of all forces acting on an object
  3. 8. The force that keeps object from falling through other things
  4. 9. The creator of Newton's Laws
  5. 10. A force that is applied by another object or person
Down
  1. 1. Two forces that are not equal in newtons
  2. 2. A force that pulls things down
  3. 4. Push or pull
  4. 5. The tendency of an object to resist motion
  5. 7. The force that resists the motion of objects