If an element has a charge of 3+ how many more protons does it have than electrons

It would have 3 more protons because protons have a positive charge and electrons have a negative charge. To balance them out you would have to have the same amount of protons and electrons so the charge can be neutral. However, in this case, there is a positive charge of 3. so long story short the answer would again be 3 .

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.