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Aerosion
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Homework Statement
I don't want to sound like I'm asking anyone to do my homework for me, but I really don't know how to find this.
Let me give an example problem: A uniform electric field of 2kN/C is in the x direction. A point charge Q=3 microcoloumbs initially at reast at the origin is released. What is the kinetic energy when it is at x=4m and what is the change in potential energy of the charge from x=0 to x=4m?
Homework Equations
The Attempt at a Solution
I know that the potential energy difference is the negative of the kinetic energy of the charge, and I know how to get the potential energy (integrate the electric field with regard to the increase in x and multiply by the negative of the charge) but I'd rather know exactly how to find the kinetic energy of a charge.