A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coefficient of kinetic friction between the stone and the surface?
A) 0.25
B) 0.80
C) 0.30
D) 0.13
E) 0.43

Question

Quizplus · Accepted Answer

The work done by friction is equal to the initial kinetic energy of the stone. Using the work-energy principle and the formula for frictional force, the coefficient of kinetic friction can be calculated as 0.30.

A Stone Initially Moving at 8