Problem 6-7 Friction coefficient - Part 2 - A

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.

\(v_x{^2} = v_{0x}{^2} + 2a_xx \\ a_x = -1.83\; m/s^2 \; \text{ (answer to (a))}\)

Correct.

What is the FBD for the puck while it is moving. (Use a coordinate system with \(+x\) to the right and \(+y\) up.)

Four possible FBDs of the puck with forces acting on it.

(A)

(B)

(C)

(D)