Across
- 4. the speed of something in each direction.
- 5. wind airflow.
- 7. it can be propelled to a great height or distance
- 9. taking place along constant streamlines; not turbulent.
- 10. third law of motion Every action has an equal and opposite reaction.
- 11. of pressure It is the total some of a pressure.
- 13. the force against an object.
Down
- 1. it can propel something.
- 2. a small rocket engine
- 3. the force of thrust propelling in the air.
- 6. to push something in a certain direction.
- 8. von Braun he is a rocket engineer and rocket scientist.
- 12. impulse it is a change of direction.
- 13. Robert H. Goddard