A spacecraft descends vertically near the surface of Planet X. An upward thrust of 30.0 kN from its engines slows it down at a rate of 1.20 m/s2, but if an upward thrust of only 12.5 kN is applied, it speeds up at a rate of 0.80 m/s2, (Note: I will compare the relative sizes of your vectors in your free body diagrams) a) What is the direction of the acceleration of the spacecraft in the case of 30.0 kN thrust