Olaf is standing on asheet of ice that covers the football stadium parking lot inBuffalo, New York; there is negligible friction between his feetand the ice. A friend throws Olaf a ball of mass 0.400 that is traveling horizontally at 10.3 . Olaf's mass is 68.9 .
If Olaf catches the ball, with what speed do Olaf and the ball move afterward?
If the ball hits Olaf and bounces off hischest horizontally at 9.00 in the opposite direction, what is his speed after the collision?