Firstly, electrons don't operate with usual Newtonian mechanics. But even if they did, you have to think about how momentum works. Momentum is mass multiplied by velocity (p=mv). If you have an electron moving at 1000m/s, it still only has a mass of about 9.1x10^-31 kg, so its momentum is only 9.1x10^-28 kg·m/s.
Momentum and force are related by time (F=p/t). The force exerted would be tiny, even if the time taken to slow from 1000m/s to 0m/s was 0.1 milliseconds, you're looking at a force of 9.1x10^-28 Newtons. The attraction force (Coulomb's law) says that F=(q1·q2)/(4pi·E0·(r^2)), where E0 is the permittivity of space. Using the Bohr radius (5.291x10^-11 m) and the electron/proton charges (1.609x10^-19 C, negative for electrons) we can calculate that the attractive force between the electron and nucleus of a Hydrogen atom is around 8.3x10^-8 N, which is tens of orders of magnitude higher than the force of deceleration we calculated above.
In short, we can basically say that the force of electrical attraction between the nucleus and electrons in an atom is much much greater than any force you can reasonably generate from hitting two pieces of copper together.