Physics Problem on the Acceleration Vector

A jet plane is flying at a constant altitude. At time t1 = 0 it has components of velocity vx = 90 m/s, vy = 110 m/s. At time t2 = 30.0 s the components are vx = -170 m/s, vy = 40 m/s. (a) Sketch the velocity vectors at t1 and t2. How do these two vec- tors differ? For this time interval calculate (b) the components of the average acceleration, and © the magnitude and direction of the average acceleration.