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  1. 2. amount of work completed in a certain period of time
  2. 5. rate at which speed changes
  3. 6. "An object at rest tends to remain at rest unless acted upon by an outside force."
  4. 7. push or a pull on an object
  5. 8. Force=mass x acceleration is which of Newton's laws
  6. 9. Chopping firewood with an ax makes use of what kind of simple machine
  1. 1. speed in a given direction
  2. 3. number of times a machine multiplies an effort force is __advantage
  3. 4. another name for Newton’s first law of motion-Law of _
  4. 8. The distance an object travels in some amount of time
  5. 9. Force x distance is the formula for