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0.005*85*9.81v+0.5*1.15*0.5*0.6v^2-85*9.81v=0
Wy multiply elements
0.005*85*9.81v+0.5*1.15*0.5*0.6v^2-765v=0
We add all the numbers together, and all the variables
-765v+0.005*85*9.81v+0.5*1.15*0.5*0.6v^2=0
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