و By assuming that a hydrogen atom consists of an electron of charge ē orbiting a proton of charge e calculate the ratio of the electric force between
the electron and the proton to the gravitational force between them. [Given that mass of ē = 9.1 x 10^-31kg, mass of e= 1.64×10^-27kg, G = 6.67×10^-11]

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. 

Potato’s are the right way to go promise not apples i’m 5