Physics pls help

Determination of the identity of charged atoms, called ions, is possible through a time-of-flight mass spectrometer, which measures the amount of time it takes for an ion to collide with an oppositely charged target plate at the end of a long column. A diagram is shown below.


As ions are accelerated toward the oppositely charged plates, the magnitude of the charge and the mass of the atom are taken into
account through the equation: Force = mass x acceleration. Scientists operating the mass spectrometer have the ability to change different
settings, including the charge (positive or negative) and the magnitude of the charge of the target plates to examine how ions will behave.
They conduct the following trials:

Question:

Time of flight mass spectroscopy directly measures the time it takes for the ions to hit the target plate. Considering the charge of the ions and the charge of the plates they are moving towards, rank each sample above in terms of the shortest time in flight (moving fastest) to the longest time in flight (moving slowest).