In a game of shuffleboard (played on a horizontal surface), a puck is given an initial speed of 6.0 m/s. It slides a distance of 9.0 m before coming to rest. What is the coefficient of kinetic friction between the puck and the surface?
A) 0.20
B) 0.18
C) 0.15
D) 0.13
E) 0.27

Question

Quizplus · Accepted Answer

The work-energy principle states that the work done by friction is equal to the change in kinetic energy. The frictional force is the product of the coefficient of kinetic friction and the normal force. Using the equation $ \mu_k = \frac{v^2}{2gd} $, where $ v = 6.0 \, \text{m/s} $, $ g = 9.8 \, \text{m/s}^2 $, and $ d = 9.0 \, \text{m} $, we find $ \mu_k = 0.20 $.

In a Game of Shuffleboard (Played on a Horizontal Surface)