You (m=75.0 kg) are floating outside your space station, and- oh no- a siren sounds, and the doors start to close! At the instant the siren sounds, you are exactly 10.0 m from the station doors and floating away from the space station at a speed of 1.00 m/s. The doors will shut in 15.0 seconds. Its a good thing you have a jetpack on!

Question

You (m=75.0 kg) are floating outside your space station, and- oh no- a siren sounds, and the doors start to close! At the instant the siren sounds, you are exactly 10.0 m from the station doors and floating away from the space station at a speed of 1.00 m/s. The doors will shut in 15.0 seconds. Its a good thing you  have a jetpack on!
a. Find the minimum acceleration you must undergo to get inside in time.
b. While your jetpack propels you forward, the shuttle doors blow gas at you, causinga 5.90 N force to oppose your forward motion. Draw an FBD of all forces acting on you.
c. Find the force the jetpack must exert (Fthrust) to get you inside in time

I have no idea how to even start this problem.