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**Hello, I'm practicing by doing the problems in my textbook but I have no way of knowing if my answers to positive questions are correct or not so can someone tell me if I did this problem correctly?**

1. Homework Statement

1. Homework Statement

While a roofer is working on a roof that slants at 36deg above the horizontal, he accidentally nudges his 85.0-N toolbox, causing it to start sliding downward, starting from rest. If it starts 4.25 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 22.0 N?

## Homework Equations

KE + U + W = KE + U sin(theta)=o/4.25

## The Attempt at a Solution

U + W = KE o=4.25sin36=2.49

mgcos(theta)(h)+wsin(theta)(u_k)=KE

(85*cos(36)*2.49)+(85*sin(36)*22)=KE

KE=1270.38

v=sqrt((2*KE)/m)

V=17.12 m/s?