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

c)as speed changes, wavelength and frequency change.

everything changes!