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Chapter 2
Exploring Space
Term | Definition |
---|---|
thrust | the reaction force that propels a rocket forward |
orbital velocity | the velocity a rocket most achieve to establish an orbit around earth |
escape velocity | the velocity a rocket must reach to fly beyond a planet's gravitational pull |
velocity | speed in a given direction |
satellite | an object that revolves around another object in space |
rocket | s device that expels gas in one direction in order for the rocket to move in the opposite direction |