Posted by **Kayla** on Sunday, January 29, 2012 at 3:08pm.

A spaceship lifts off from the Earth with constant acceleration. 9 seconds into the flight, a small piece of the ship breaks off and falls back to the Earth. If the piece hit the ground 11.5 seconds after breaking off from the spaceship, what is the spaceshipâ€™s acceleration (in m/s2)?

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