Aha Crossword
               
               
               
               
               
               
               
               
               
               
               
               
               
               
 
 
Down: 2) the velocity a rocket must reach to fly beyond a planet’s gravitational pull3) The reaction force that propels a rocket forward4) bunny5) a device that expels gas in one direction to move in the opposite direction Across: 1) speed in a given direction6) the velocity a rocket must achieve to establish an orbit around Earth7) 
 

 

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