A particle undergoes three consecutive displacements ~d1 = (15ˆi + 30ˆj + 12ˆk)cm,
~d2 = (23ˆi − 14ˆj − 5.0ˆk)cm, ~d3 = (−13ˆi + 15ˆj)cm. Find
a) The components of the resultant displacement and its magnitude
b) Unit vector in the direction of resultant displacement
