Part A You stand on a sheet of ice which covers the foclball stadium parking lot

Question

Part A You stand on a sheet of ice which covers the foclball stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. If you catch the ball, with what speed do you and the ball move afterward? A friend throws you a heavy ball of mass m travelinghorizontally at speed v Your mass Is 10m. Submit My Answers Glve Up Part B If the ball hits you and bounces off your chest, so afterward it is moving horizonayat the opposite direction, what is your speed after the collision? Az Submit My Answers Give Up

Explanation / Answer

initial momentum of the ball P1 = m*v

initial momentum of you pi = 0

total initial momentum pi = m*v

part(B)

after catching the ball

final momentum Pf = (m1+m2)*v'

from conservaiton of momentum

Pf = Pi

(m1+m2)*v' = m*v

(m + 10m)*v' = m*v

11*v' = v

v' = v/11 = 0.09 v <<<<=========ANSWER

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part B

momentum of ball after collison P1' = -m1*4v/6

momentum of you after collision p2' = m2*v' = 10m*v'

from momentum conservation

Pf = Pi

10m*v'- m*4v/5 = m*v

10*v' = v + 4v/5

10*v' = 9v/5

v' = 9v/50 = 0.18 v <<<<<----------ANSWER

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