Consider a flight vehicle traversing in a gravityless vacuum in an inertial direction X. (1) The mass of the rocket is M and does not change with time; (2) thrust force starts with a maximum of Fmax at t = 0, and decreases by K newtons every 1 second. The engine cuts off at t = tcutoff. You are to determine a. The X velocity (Vx) of the vehicle tcoast seconds after the engine cutoff b. The X position (X) of the vehicle tcoast seconds after the engine cutoff