An experimental high-speed maglev shuttle is launched from rest inside a vacuum propulsion chamber. The shuttle accelerates with constant acceleration along a straight horizontal track of length 18.0 m18.0\text{ m}18.0 m. Upon reaching the end of this track, the shuttle's velocity is measured to be 15.0 m/s15.0\text{ m/s}15.0 m/s.
Calculate the acceleration of the shuttle.