A rocket-powered sled moves along a track, eventually reaching a top speed of 256 m/s to the west. It then begins to slow down, reaching a complete stop after slowing down for 1.52 s. What was the sled s average acceleration and velocity during the slowdown phase?
a.
128 m/s^2 east, 128 m/s east
b.
168.4 m/s^2 east, not enough information
c.
0 m/s^2 0, 128 m/s west
d.
168.4 m/s^2 west, not enough information
