An unidentified flying object (UFO) is observed to travel a total distance of 49000 m, starting and ending at rest, over

[answerhappygod]

An unidentified flying object (UFO) is observed to travel a
total distance of 49000 m, starting and ending at rest, over a
duration of 4.67 s. Assuming the UFO accelerated at a constant rate
to the midpoint of its journey and then decelerated at a constant
rate the rest of the way, what was the magnitude of its
acceleration? Express your answer in g s , where 1 g = 9.81
m/s^2.