Problem 6-7 Friction coefficient

A hockey puck travels \(33\; m\) along an ice rink before coming to rest. Its initial speed was \(11\;m/s\).

(a) What is the magnitude of the acceleration of the puck?
(b) What is the coefficient of kinetic friction between the puck and the ice?

Accumulated Solution

Diagram of puck with speed and direction indicated.

We start with a sketch of the problem and a choice of \(+x\) to the right.

Which Galilean equation is useful for finding the acceleration with the information provided?

(A)   \(v_x = v_{0x} + a_{x{^t}}\)

(B)   \(x = v_{0x{^ t}} + (1/2) a_xt^2\)

(C)   \(v_x{^2}  = v_{0x}{^2} + 2a_xx\)