Squids can move through the water using a form of jet propulsion. Suppose a squid jets forward from rest with constant acceleration for 0.170 s, moving through a distance of 0.179 m. The squid then turns off its jets and coasts to rest with constant acceleration. The total time for this motion (from rest to rest) is 0.400 s, and the total distance covered is 0.421 m. What is the magnitude of the squid's acceleration during
(a) The time it is jetting
(b) The time it coasts to a stop?