Alex and Matthew, decide to try an experiment with electric fields. They set up two parallel plates 3.0 cm apart to form a uniform electric field with a potential difference of 120 V. Alex is by the negative plate while Matthew is by the positive plate. They both have devices that allow them to release atomic particles and want to get the particles to collide. Alex releases an electron 250 ns after Matthew releases a proton. Both particles start from rest and travel perpendicular to the plates. When the particles are released, how far from the Matthew do they meet?