Question: Unit is on Momentum and Impulse Experienced Curlers know how to safely stop a moving stone. What do they do and why? At first I thought sweeping helps the moving stone stop. But looking around the internet sweeping actually decreases the friction between the stone and the ice by forming water. Another idea I had is sweeping caused the stone to travel across more surface area, allowing it to decelerate and stop earlier. Do you guys have any ideas? Theory?