William writes the following description of how objects are attracted to each other. Charges transfer from one object to another. A charged object next to an uncharged object will repel each other. A positively charged object and a negatively charged object will attract each other.

What is the error in William's description?

A charged and uncharged object attract each other.
Charges are transferred from water to objects.
Transfer of charges occurs due to heat.
Two charged objects attract each other.

From negative to negative

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.