A wave set out from a source is reflected back to the sources in 1.0 x 10 ^ -3 s. If the velocity of the wave is 3.0 x 10 ms^ -1, calculate the distance of the reflecting surface from the source.

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. 

Ai think hope that

Answerit is comparative because this experiment is comparing the results of the volume at minimal pressure and then increases it; ; ;