I am trying to work problem 25 from chapter 9 of the physicstextbook titled Physics third edition by James S. Walker.I was reading through the cramster solution to this problem and Idon't understand the transition from step 4 to step 5. Here are thedetails: I understand this step: mvx+ mv(cosx + siny) = 2mvf but I don't understand how I get to this step: vf= 1/2v [(1+cos)x + siny] I am trying to work problem 25 from chapter 9 of the physicstextbook titled Physics third edition by James S. Walker.I was reading through the cramster solution to this problem and Idon't understand the transition from step 4 to step 5. Here are thedetails: I understand this step: mvx+ mv(cosx + siny) = 2mvf but I don't understand how I get to this step: vf= 1/2v [(1+cos)x + siny]