Rocket Science

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Across
  1. 4. The speed of something given in a direction.
  2. 6. force equals mass times acceleration
  3. 7. A system pushing an object in one direction.
  4. 10. An American engineer professor who made the world's first liquid-fueled rocket.
  5. 12. A German aerospace engineer.
  6. 14. The force that works against the movement of another object.
  7. 15. The center of mass.
  8. 16. A force that drives something else forward.
  9. 17. A object that can go up to great height.
Down
  1. 1. Every action comes with a reaction.
  2. 2. An object at rest stays at rest, and an object in motion stays in motion
  3. 3. When an aircraft takes off.
  4. 5. a small rocket engine on a spacecraft, used to go faster in its flight path.
  5. 8. A point on a body where all pressure acts on the body
  6. 9. A change in momentum.
  7. 11. Something that is not steady.
  8. 13. airflow that isn't turblent