# Why doesn't the acceleration of an ion in an electric field not depend on the orientation of its velocity in relation to the electric field?

My teacher said in class, " the direction of the acceleration of an ion located in a region without magnetic field but with electric field does not depend on the relative orientation of its velocity with respect to the direction of the electric field".

However I do not understand why this is.

My argument is as follows: Let's say that a positive ion is moving towards the right with its velocity in that direction and there is a negative ion located to the left of it. Wouldn't the positive ion be attracted towards the negative ion due to the direction of the electric field created?

Please let me know if my argument is flawed or if I am missing something.