[Daryl]

2 golfers, 50 yards off the green. Both with sand wedges. Golfer #1 hits the ball at the pin and rolls forward 10 feet. Golfer #2 hits the ball at the pin and the ball spins backward 10 feet.

What are the approximate spin rates of the two balls?

Questions:

1. Did they generate the same clubhead speed?
   
2. Did both Golfers accelerate through Impact?
   
3. Did clubhead path differ? (angle of attack)(angle of attack affects effective loft?)
   
4. Did one of the balls roll up the clubface more than the other?
   
5. Hinging differences? Angled vs Horizontal?