At 1: 45 am pdt, you point out the moderately bright star that is transiting due south in the sky. (you could use the south side of the planisphere).
fomalhaut?
the bright star we can see directly overhead at about 9: 45 pm pdt is (you could use the planisphere).
vega?

Electoral current force mechanical advantage if the wheel and axle is 2 n and the output force is 20 n

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.