s fired and it parachute opens, and the (downward) velocity slows linearly to -6 ft/s in S s. The rocket then "floats" to the ground at that rate s and the velocity function v (for all times ). (a) Determine the position function 422 rosts3 1 -32(t-3) + 4741à ãª3cts20 132(t-20)-6141à if20