A neon sign includes a long neon-filled glass tube with electrodes at each end across which an electric field of 20,000 N/C. is placed. This large field accelerates free electrons which collide with and ionize a portion of the neon atoms which emit red light as they recombine. Assuming that some of the neon ions (mass 3.35x10-26 kg) are singly ionized (i.e. have charge e=1.6x10-19 C) and are accelerated by the field, what is their acceleration (m/s)?