Machines in Motion Unit 5 Vocabulary Review

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Across
  1. 11. momentum of an object moving through a circle
  2. 12. force applied to an object that causes it to move in a circle
  3. 14. movement between two extremes
  4. 15. the study of objects moving through the air
Down
  1. 1. imaginary or apparent force that is equal and opposite to the centripetal force that keeps an object moving in a circle
  2. 2. Kepler's first law of planetary motion, that planets move in ellipses as they orbit the sun
  3. 3. movement that repeats at a regular interval
  4. 4. Kepler's second law of planetary motion, that as planets move, a line drawn from the sun to the planet sweeps over an equal area in an equal amount of time
  5. 5. the process causing the oscillation to die down (generally due to friction)
  6. 6. the number of cycles in one second (measured in hertz)
  7. 7. Kepler's third law of planetary motion, that the ration of the square of a planet's period to the cube of it's distance from the sun is a constant
  8. 8. a string or bar with a weight at the end that is free to swing back and forth
  9. 9. the position about which the oscillation occurs
  10. 10. the amount an object moves in each direction around the mean position
  11. 13. the time for one complete cycle
  12. 16. one complete movement, such as up and down of a spring or one complete revolution