Suppose you are standing on an ice sheet that covers the parking lot of the Buffalo football stadium; the friction between your feet and the ice is negligible. A friend throws you a 0.400 kg football ball that travels horizontally at 10.0 m/s. Your mass is of 70.0 kg. a) If you catch the ball, how quickly will you and the ball move afterwards? b) if the ball hits you in the chest and bounces moving horizontally at 8.0 m/s in the opposite direction, how fast will you be after the crash?