Rocket Science

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Across
  1. 2. Robert H. Goddard-
  2. 3. von Braun-
  3. 5. speed of something in a given direction
Down
  1. 1. second law of motion. Newton's third law of motion-
  2. 2. air's resistance to an object passing through it.
  3. 4. of pressure-
  4. 6. impulse-