This is the question: In a pickup game of dorm shuffleboard, students crazed byf

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This is the question:
In a pickup game of dorm shuffleboard, students crazed byfinal exams use a broom to propel a calculus book along the dormhallway. If the 3.5 kg book is pushed from rest through adistance of 0.90 m by the horizontal 25 N forcefrom the broom and then has a speed of 1.60 m/s, what isthe coefficient of kinetic friction between the book andfloor? Thanks for you help, This is the question:
In a pickup game of dorm shuffleboard, students crazed byfinal exams use a broom to propel a calculus book along the dormhallway. If the 3.5 kg book is pushed from rest through adistance of 0.90 m by the horizontal 25 N forcefrom the broom and then has a speed of 1.60 m/s, what isthe coefficient of kinetic friction between the book andfloor? Thanks for you help,

Explanation / Answer

Kinetic energy = work done on book minus work done againstfriction 1/2 m v2 = F d - m g d = (F d - 1/2 m v2) / m g d = (25 * .9 - 1/2* 3.5 * 1.62) / (3.5 * 9.8 * .9) = .58

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