[Jarick]

I'm not a physics expert, but my guess is the puck would have a much higher force and the same initial velocity but hold it's momentum much longer over distance.

My thinking is that the acceleration is constant (speed of the swing of the stick), but the mass is what changes, so the force is greater for the hockey puck over the street puck.

The only reason I'd think the puck would go faster over distance is the lightweight puck might flutter more with air resistance.