I know the answer to the following problem is $\displaystyle 32m/s^2$, but I don't see how it is obtained if you're not given $\displaystyle t$ (time).

The catapult of the aircraft carrier USSAbraham Lincolnaccelerates an F/A-18 Hornet jet fighter from rest to a takeoff speed of $\displaystyle 173 {\rm mi/h}$ in a distance of $\displaystyle 307 {\rm ft}$ . Assume constant acceleration.

After it gave me the answer, I was then able to figure out $\displaystyle t$.