Liv has just seen a commercial advertising a fancy kind of make-up that she would like to buy. She does not have a pen or a piece of paper to write down the telephone number, so she repeats to herself over and over again while she runs into the kitchen to find the telephone. Liv is currently using the process of rehearsal to keep the telephone number active in her short-term memory.

Because the dept in the ocean

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.