Measuring time of arrival with simple circuitry

I am trying to measure time of arrival of a high speed object to then calulcate the velocity of the object.
The kit I will be using is a cDAQ-9174 with which I will either use the NI9401 or the NI9223.
I am want to make the circuit so that when it is broken the time taken is recorded.
The physical switch is easy to create however I am having trouble knowing where to start with labview.
Could anybody give me a point in the right direction, even something simple like which of the two harware would be most appropriate.
Thank you