Physics Chapter 7 Crossword

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Across
  1. 3. Newton's law that states that Fg = Gm1m2/r^2
  2. 6. the rate of change of angular displacement
  3. 10. when objects orbit a planet, ___ provides the centripetal force
  4. 12. according to Kepler, all planets move in an ___ orbit
  5. 15. Kepler's second law is the law of _____
  6. 16. Greek symbol used for angular displacement
  7. 18. time it takes for an object to complete one orbit
  8. 19. objects in circular motion move about this
  9. 20. when an object's tangential speed in circular motion is constant
Down
  1. 1. the linear velocity of an object in circular motion
  2. 2. the force that pulls inward during circular motion
  3. 4. the rate of change of angular velocity
  4. 5. the Greek symbol for angular velocity
  5. 7. angular displacement times radius equals this quantity
  6. 8. the outward pulling sensation during circular motion that is caused by the object's inertia
  7. 9. according to Kepler's third law, the orbital period squared is ___ proportional to the radius of orbit cubed
  8. 11. the Greek symbol for angular acceleration
  9. 13. the constant that equals 6.67 * 10^-11
  10. 14. scientist who devised the three laws of planetary motion
  11. 17. unit of measure for angular displacement