Balanced & unbalanced force crossword puzzle

12345678910
Across
  1. 6. capacity to get faster
  2. 7. the path straight ahead from an object
  3. 8. object that's in a relation to another
  4. 9. pulls objects down)
  5. 10. invented by sir Isaac newton
Down
  1. 1. unequal forces acting on each other
  2. 2. the rate an object is moving
  3. 3. equal forces acting on each other
  4. 4. push or pull that causes an object to change
  5. 5. Isaac Newton discovered gravity