Across
- 2. Robert H. Goddard He made the worlds first liquid fueled rocket
- 5. von Braun German space engineer
- 7. moving unsteadily
- 9. collecting speed
- 10. first law stay in motion
- 12. the force of a rocket engine
Down
- 1. of pressure average location of pressure
- 3. Little einstein's transportation
- 4. something that causes something to move
- 6. something that thrusts
- 8. takeoff
- 11. impulse maxium momentum