Задача 30170.

A proton flies into a uniform electric field, the intensity of which is E = 50 kV/m, along the field lines at a speed of V = 2*10^6 m/s. Find the distance d after which the speed of the proton will double.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
If you have any questions regarding the solution, please write. I try to help.