The Question: (1) You are standing on a sheet of ice that covers a parking lot; there is negligible friction between your feet and the ice. A friend throws you a 0.400 kg ball that is traveling horizontally at 10.2 m/s. Your mass is 73.4 kg. (a) If you catch the ball, with what speed do you and the ball move afterward? Answer in cm/s. (b) If the ball hits you and bounces off your chest, so that afterward it is moving horizontally at 8.70 m/s in the opposite direction, what is your speed after the collision? Answer in cm/s. My Solution: I was able to solve Part A. It's Part B I'm having trouble with. I used (.400kg)(870cm/s)=(73.4kg)(v) I solved for v and got 4.74cm/s, but the answer is wrong. What am I doing wrong?