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Although the injuries tend to be less severe, heading a soccer ball carries many of the...

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Physics

Although the injuries tend to be less severe, heading a soccerball carries many of the same dangers as getting hit by a blockeror tackler in a football game. Indeed, heading is now forbidden inmany youth leagues. In a very simple model, calculate the impulsegiven to the skull and its average acceleration when struck by asoccer ball. Assume that a headed soccer ball undergoes an elasticcollision lasting 0.7 ms in which it reverses direction. Considertwo different heading techniques: (i) where the head effectivelyrecoils on its own, independent of the body (ii) the head and bodyrecoil together. Do calculations for both youth players and foradults.

                                                Youth              Adult

Soccer ball mass(kg)             0.375               0.425

Speed of kicked ball(m/s)      20                    35

Mass of skull(kg)                   3                      5

Mass of entire body(kg)        30                    60

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