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A rocket is fired from its launch pad with acceleration  9.0 m/s2.     The   rocket travels vertically upward...
A rocket is fired from its launch pad with acceleration  9.0 m/s2.     The  
rocket travels vertically upward for 13.0 s at which time all the fuel is burned
out. Calculate the total time the rocket is in the air, from launch to falling  
back to the ground.
Science   Physics   
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