Ajet makes a landing traveling due east with a speed of 120 m/s .
if the jet comes to rest in 13.5 s , what is the magnitude of its average acceleration?
what is the direction of its average acceleration? east, west, north or south?
i actually can figure this out if i knew the equation : (

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.