Does a boy in rest have momentum?
Well, technically yes... and no.
Momentum is given by the equation:
#p#is the momentum of the object
#m#is the mass of the object
#v#is the velocity of the object
Since the boy's at rest, his velocity is
We can say in physics that the boy has no momentum. However, in a philosophical sense, we could also claim that yes, the boy has momentum, but its value is
So, in my opinion, the answer depends on which way you're thinking from.