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**1. The problem statement, all variables given/known data**

A particle of charge 6 µC is held fixed while another particle of charge 8 µC is released

from rest at a distance of 1.4 m from the first particle. If the mass of the second particle is

3x10

^{-6}kg, what is its speed when it is very far away from the first particle?

## Homework Equations

F=ma

F= kQ

_{1}Q

_{2}/ r

^{2}

V

^{2}=V

_{o}+2ad

## The Attempt at a Solution

I pretty much worked through most the problem. In the end, I used coulomb's law in combination with newtons 2nd law to get a= 73469 m/s

^{2}. However what's bugging me is the distance that the speed is "very far away". I'm under the assumption that means at a point where the force from the first particle no longer affects the second. However, when I back-tracked using the answer(454m/s) the distance ends up being 1.4( the original distance) with the velocity equations.