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**1. Homework Statement**

A 0.010-kg positively-charged particle is accelerated by a uniform electric field directed to the right. The object accelerates from 5.0 to 15.0 m/s while traveling a distance of 0.10 m.

Use the definition of potential energy to determine the change in electric potential energy of the particle. Is the change an increase or a decrease?

**2. Homework Equations**

Wel = Kf - Ki

Wel = -Delta-U

Delta-V = W/q0

**3. The Attempt at a Solution**

The definition of electric potential is equal to -delta-U / q0

Delta-U is negative because the work of the problem from Electric Field comes out to 1 Joule from the definition of work. So, delta-U is -1 J, meaning that the electric potential change is positive since q0 is positive - but I cannot figure out how to find q0's magnitude. I'm pretty sure I'm missing something from the given to determine the value of q0, but I'm otherwise stumped!