Could you please double check and verify my math?!

A rocket-powered sled moves along a track, eventually reaching a top speed of 193 m/s to the west. It then begins to slow down, reaching a complete stop after slowing down for 2 88 s. What was the sled s average acceleration and velocity during the slowdown phase? (67.0 m/s^2 east, not enough information (0 m/s^2 0, 96.5 m/s west 67.0 m/s^2 west, not enough information (96.5 m/s^2 east, 96.5 m/'s east