Points to cover for discussing a free particle in quantum mechanics

[roshan2004]

In past paper, this question was asked "Discuss the quantum mechanical description of the motion of a free particle' What are the points that I need to write for answering this question?

 

[wasia]

Most probably you should talk about plane waves. Also, one can discuss spin, which is a property of the particle that basically tells you which equation to use. As always, http://en.wikipedia.org/wiki/Free_particle" might be a good place to start.