ANCPER
Well. A Squared, you'd be wrong
He is not wrong.
After your first response I went and paid a visit to a young lady (physics grad) who tutored my daughter in Physics a couple of years back.
S = ut + 1/2 at^
^ = squared
She said this is the valid equation up until the point the object reaches Vt, as the object is still accelerating and mass does not come into it, so in a fall where the objects fail to reach their Vt the above equation is it and they will hit the ground at the same time.
She is wrong. That is not the correct equation to use with drag - not even "up until terminal velocity". She is correct about the terminal velocity though, which is just a rearrangement (in the special case where Fnet = 0) of the equation:
Fnet = m
g - (Cd x ½ρv²s)
From this equation you should be able to see that for any velocity, if the mass is higher, Fnet is higher.