Non veni pacem mittere, sed gladium.
Not as far below him as they're flying.
Not that close. Wingtip vortices tend to sink and disperse laterally. John h.
Not the second guy. Maybe the third or fourth, unless they stay low.
There is turbulence back there. The bigger the hunk of aluminum hurtling through the sky the bigger the turbulence. Think of the turbulence streaming back and a little down from the exhaust. In minimum interval takeoffs, when you're trailing somebody it's good to make a bid to one side or the other. You can also go under or over. Don't be directly behind. Look at some of the movie clips from B-52 MITOs. There's a couple of scary looking effects from the turbulence.
No, and that's not close.
with that separation, probably not too much. what there is, is noise and lots of it