If you fall and skid to a stop on a carpeted floor, you can get a rug burn. much of this discomfort comes from abrasion, but there can also be a real burn where the skin was too hot. how does this happen?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)