Calculating Coefficient of Friction in a Hockey Puck Sliding Problem

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SUMMARY

The discussion focuses on calculating the coefficient of friction (μ) for a hockey puck sliding on ice after being struck with an initial speed of 8.30 m/s and sliding a distance of 25.0 m before stopping. The user successfully determined the puck's acceleration to be 12.5 m/s² using the kinematic equation v² = v₀² + 2a(x - x₀). The challenge lies in finding the normal force, which requires the mass of the puck; however, it is established that the mass (m) can be represented as a variable that cancels out in the equations, allowing for the calculation of μ without needing its specific value.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with kinematic equations
  • Basic knowledge of friction and normal force concepts
  • Ability to manipulate algebraic equations
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  • Study the derivation of the coefficient of friction formula (μ = f/n)
  • Learn how to apply kinematic equations in real-world scenarios
  • Explore the relationship between mass, weight, and normal force
  • Investigate frictional forces in different materials and conditions
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Physics students, educators, and anyone interested in understanding the principles of motion and friction in sports dynamics.

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Homework Statement



A hockey puck leaves a player's stick with a speed of 8.30m/s and slides 25.0m before coming to rest.

Find the coefficient of friction between the puck and the ice.


Homework Equations



f=μn
F=ma
v^2=v_0^2+2a(x-x_0)

The Attempt at a Solution



So I've already figured out the acceleration of the puck using the third equation I listed, which came out to be 12.5m/s. Problem is, I can't figure out how to find the mass of the puck. Which I need to know in order to calculate the normal force. Even then, I would still have two variables since I don't know (f) or (μ) where I'm trying to find (μ).

Help please? :)
 
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Let the mass be represented by the variable, m. It will cancel out.
 

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