Question: A UFO is traveling with a velocity of 3250 m/s. Suddenly the retro rocket is fired, the UFO slows to a stop with an acceleration whose magnitude is equal to 10m/s2.
Part A: What is the velocity of the UFO when the displacement of the craft is 215km, relative to the point where the retro rocket began firing?
Please Help and show steps. I am trying to understand how to work this question. Thanks in advance!