A positive point charge 
is positioned at a fixed point X and an identical positive point charge is positioned at a fixed point Y, as shown in the figure below.
The charges are separated in a vacuum by a distance of 
. Points A and B are on the line XY. Point A is a distance of 
from X and point B is a distance of from Y. The electric field strength at point A is 
.
A small positive charge is placed at A. The electric field causes this charge to move from rest along the line AB. Describe the acceleration of the charge as it moves from A to B.
