Olaf is standing on a sheet of ice that covers the football stadium parking lot

Question

Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400kg  that is traveling horizontally at 11.6m/s . Olaf's mass is 74.2kg

If Olaf catches the ball, with what speed vf do Olaf and the ball move afterwardIf Olaf catches the ball, with what speed vf do Olaf and the ball move afterwarIf Olaf catches the ball, with what speed vf do Olaf and the ball move afterward?If the ball hits Olaf and bounces off his chest horizontally at 7.20m/s  in the opposite direction, what is his speed vf after the collision?

Explanation / Answer

applying conservatiion of momentum

0.4*11.6=74.6*v

v=0.0622 m/s

this velocity is same afterward

now when ball hits Olaf and bounces off his chest horizontally at 7.20m/s in the opposite direction

then we have

0.4*(11.6-(-7.2))=74.6*v

v=0.1 m/s ans

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