Explains Anything on Instagram: "Kinetic friction, the force that opposes motion between two surfaces in contact, is the direct cause of the severe burns a horserider can sustain when rapidly throwing or managing a rope, especially one tied to a moving object like a running calf or steer during an event like roping. . . When the rope slips quickly through the rider's bare hand or glove, the high speed of relative motion generates intense thermal energy due to the resistance of the friction. . .