Ahockey player hits a puck with her stick, giving the puck an initial speed of 4.40 m/s. if the puck slows uniformly and comes to rest in a distance of 22.0 m, what is the coefficient of kinetic friction between the ice and the puck?

To solve this problem it is necessary to make a correlation between the energy lost by the frictional force and the kinetic energy by the puck.

Considering the definitions for the friction force as a product between the coefficient of friction and the normal force (mass by gravity) we have to:

Where,

= Distance traveled

v = Velocity of the puck

m = mass of the puck

g = Gravitational acceleration

Coefficient of kinetic friction

Re-arrange to find the Coefficient of kinetic friction

Replacing we have finally,

Therefore the coefficient of kinetic friction between the ice and the puck is 0.0448

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