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What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.