A 5.0 g object carries a net charge of 3.8uC. It acquires a speed v when accelerated from rest through a potential difference V. A 2.0 g object acquires twice the speed under the same circumstances. What is its charge?
The Attempt at a Solution
I don't really know where to start for this one. I know I need to find the force on the object to find the acceleration, then use uniform accelerated motion equations to find the velocity. But I'm not really sure how to begin using only the charge and potential difference. If I find the electric field, then I can find the force. So the first step I suppose is to find the electric field of this area with potential difference V. Any tips would be appreciated. Thanks!