Adults. 18years olds and older were affected because back then only 21 years olds and older could vote but the 26th amendment changed that
It takes work to push charge through a change of potential.
There's no change of potential along an equipotential path,
so that path doesn't require any work.
initial momentum of 2 kg blob is given as
here we have
initial momentum of 3 kg blob is given as
here we have
So initially 2 kg Blob has most momentum before they collide
I would say that the answer is C