The theory of force generation proposed (microfilaments can generate force, even in the absence of myosin, by elongating and pushing against a structure such as the plasma membrane) (also cytochalasins inhibit microfilament growth)is best supported by which of the following observations about amoeba locomotion? a. amoeboid movement stops upon expose to cytochalasins. b. amoeboid movement cannot occur if mitosis is blocked. c. moving amoeba cells produce more troponin than do stationary ones. d. the rate of movement is inversely proportional to the viscosity of the medium in the amoeba moves.

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. 

Since the pully is a simple machine so the mechanical advantage is a 1