For an isothermal process, which of the following statements is correct?
A. Work, heat, and internal energy all undergo changes.
B. Work and heat balance each other, so that there is no change in internal energy.
C. No energy is transferred as heat; internal energy change is due to work.
D. No work is done; internal energy change is due to heat.

Answer///air resistance,drag;

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. 

Wow good luck with that answer