Rocket Science

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Across
  1. 3. impulse the product of thrust
  2. 4. von Braun a rocket engineer
  3. 5. a substance
  4. 7. a huge engine
  5. 9. I dragged the sack
  6. 10. speeding
  7. 12. to take off
  8. 13. Robert H. Goddard Studied Rocket Science
Down
  1. 1. fly's to space
  2. 2. consisting of laminae
  3. 6. shaking
  4. 7. a boost
  5. 8. third law action is an equal and opposite
  6. 11. of pressure acts on the body