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 0.400 kg that is travelling horizontally at 11.6 m/s. Olaf's mass is 69.7 kg. (Figure 1) If Olaf catches the ball, with what speed upsilon f do Olaf and the ball move afterward? Express your answer numerically in meters per second. If the ball hits Olaf and bounces off his chest horizontally at 7.70 m/s in the opposite direction, what is his speed upsilon f after the collision? Express your answer numerically in meters per second.

Explanation / Answer

A)conserving momentum,

11.6*0.4=(0.4+69.7)v

or v=0.06619 m/s

B)conserving momentum,

11.6*0.4=69.7*v-0.4*7.7

or v=0.1108 m/s

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