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Hi! I'm new to posting on this website but thought I'd give it a go! I would really appreciate help with this problem. I know the answer is supposed to be around 16m/s, but for some reason I am getting an answer that is too high of a velocity. Here is my attempted solution.

W = ΔKE+ΔU

Given he starts from rest, we know that,

W=KEf+Ui

Fx=200N

W=200N(50/tan(20))

200N(50/tan(20))=1/2mvf^2 -mghi

1712.6=Vf^2

Vf=√(1712.6) =41m/s

However, this solution is not correct. Where did I go wrong?