1. The problem statement, all variables and given/known data You are trying to separate 2 types of ions (fast and slow). The fast ones travel at 1000m/s and the slow ones travel at 100m/s. At the beginning you have 2 plates. One has + and the other one has negative charge. The size of the plates is 5cm and they are 3 cm apart. What will the acceleration have to be between the 2 plates that will put the fast and slow ions 2 cm apart at 50cm once out of the plates. Remember once the ions are out of the plates, they will not accelerate any more. 3. The attempt at a solution I drew it out. The reds are the ions. The blue box at the bottom is the emitter. The 2 gray ones are the charged plates that will accelerate the ions. From what i know there will be 2 different times since the ions travel at different speeds For the fast one i calculated .5m / 1000m/s = .0005s for the slow one i got .5m / 100m/s = .005s From here on out, i'm stuck and have no idea what to do next. Thanks in advance.