As an erosional process, how is mass wasting unique compared to wind, water, and ice?
mass wasting affects particles of all sizes whereas the others affect only smaller particles.
mass wasting does not require a transporting medium.
mass wasting affects much larger geographic areas than does wind, water, and ice.
all of these make mass wasting unique compared to wind, water, and ice.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.