1. The problem statement, all variables and given/known data 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. Relevant 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!