Newton's law

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Across
  1. 4. Two force's of equal strength
  2. 5. Newton's second law of motion
  3. 7. A man credited for his 3 laws of motion
  4. 8. Combination of all forces that act on an object
  5. 9. The speed at which an object picks up speed
Down
  1. 1. Newton's third law of motion
  2. 2. Two different forces of acting against each other
  3. 3. The force acting against moving objects
  4. 6. Newton's first law of motion