Across
- 2. tries to keep the rocket from lifting off
- 3. a cylindrical object containing its own fuel to propel itself
- 6. substance that moves the rocket forward
- 9. force used to attain liftoff
- 11. impulse I = Duration * Thrust
- 13. von Braun the father of rocket technology
- 14. third law of motion every action has an opposite and equal reaction
Down
- 1. moving smooth and steadily
- 4. small rocket engines
- 5. the speed of something in a certain direction
- 7. uneven movement caused by drag
- 8. Robert H. Goddard person who built the first liquid-fueled rocket
- 10. of pressure the point where drag acts
- 12. when something leaves the surface, it is propelling off