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. The problem statement, all variables and given/known data 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? 2. Relevant equations KE + U + W = KE + U sin(theta)=o/4.25 3. 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?