1. An object is initially moving with a speed of 10.0 m/s in the direction 60.0 degrees N of E. Ten seconds later, the object is moving with a speed of 20.0 m/s in the direction 30.0 degrees S of E.
(a) What is the acceleration of the object in unit vector notation?
(b) What is the magnitude and direction of the displacement of the object during the ten second interval?