# Aerodynamics problem -- Hockey stick hitting another player

Dillypuff
Homework Statement:
Hello all, this is not really homework but it's a problem I've been trying to solve. Let's say, in a hockey game, a player has a club with a mass of 100g. While running, instead of hitting the disc he hits another player, running in the opposite direction of the motion of the club. With what force does the club hit the other player? Average acceleration of the club is unknown, otherwise I'd simply apply the formula f =m*a. Im grateful for any help!
Relevant Equations:
F =m*a
I thought it would make sense to use the formula f=m*a, but I do t know the acceleration and I don't know what is the average acceleration of a hockey club (guess it depends on strength of the player?).

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Homework Statement:: Hello all, this is not really homework but it's a problem I've been trying to solve. Let's say, in a hockey game, a player has a club with a mass of 100g. While running, instead of hitting the disc he hits another player, running in the opposite direction of the motion of the club. With what force does the club hit the other player? Average acceleration of the club is unknown, otherwise I'd simply apply the formula f =m*a. I am grateful for any help!
Relevant Equations:: F =m*a

I thought it would make sense to use the formula f=m*a, but I do t know the acceleration and I don't know what is the average acceleration of a hockey club (guess it depends on strength of the player?).
There is no way to answer on the given information. During the impact, the force rises from zero to some maximum then declines back to zero. Given the mass of the club and its change in velocity you can find its change in momentum, but without knowing how long the impact lasted, and how the force varied over that time, it is impossible to say anything about the force magnitude.

Aerodynamics??

• russ_watters and Delta2
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Aerodynamics??
More like Cruel Violent Athletics lol.

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A crude estimate which ignores the fact that the force changes over the duration of the impact is to compute the energy of the impacting club (##E=\frac{1}{2}mv^2##) and equate this to the work done by the club as it dents in the target skull (##W=\vec{F}\cdot \vec{d}##). If you know mass, impact velocity and depth of dent, you can come up with a number for "average" force.

[As @haruspex often points out, the relevant "average" is an average weighted by displacement. Normally when we talk about average force we mean an average weighted by time]