Here's another one:

N, S, E, W, stands for North, South, East, and West.

A Boeing 777 is flying at 720 km/h [N 25 degrees E] and then executes a turn that brings it to a new velocity of 770 km/h [S 50 degrees E]. The turn took 10.0s. Determine the acceleration. Answer in m/s^2.

Anyone? Thanks...