movement physic

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Across
  1. 3. ancient Greek philosopher, 384-322 BC
  2. 6. increase in speed
  3. 8. resistance to the motion of an object
  4. 10. type of mathematics developed by Newton and others
  5. 11. universal force of the attraction of all objects
Down
  1. 1. state of rest, or motion in a straight line
  2. 2. major tool of physics
  3. 4. My teacher calls himself
  4. 5. total quantity of an object's matter
  5. 7. the rate of motion in a particular direction. The formula that expresses it is: v=gt (velocity equals acceleration multiplied by time)
  6. 8. to a physicist the only forces in nature are gravity, electromagnetism, and the weak and strong nuclear force. Einstein and others believed these were different aspects of the same force
  7. 9. movement of an object
  8. 12. Einstein German-American physicist, 1879-1955; his theory showed that gravity affects light