Calculating Coefficient of Friction for a Sliding Hockey Puck on Ice

[Zeal_of_Soul]

a hockey puck on a frozen pond is given an initial speed of 20.0 m/s.if the puck always remains on the ice and slides 115 m before coming to rest,determine the coefficient of friction between the puck and ice.

I started solving the question by getting the acceleration (a=-1.8m/s^2) ,but I'm stuck to this point.
Please help..Thank you

 

[jambaugh]

1.) What is the definition of the coefficient of friction?
2.) What is the relationship between acceleration and force?