In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.6 kg book is pushed from rest through a distance of 0.90 m by the horizontal 22 N force from the broom and then has a speed of 1.60 m/s, what is the coefficient of kinetic friction between the book and floor?
Workin= workdoneonfriction+ final KE
22*.9= mu*3.6*g + final KE
solve for mu.
Ok, so I did...
(22)(.9)=mu*(3.6)(9.8)+4.608
19.8=mu(35.28)+4.608
15.192=35.28*mu
mu=0.4306
This is the wrong answer so what am I doing wrong??
u r dumb stop posting you idiot
2 answers