Dynamics Algebra based project- need confirming and corrections

Hello.I have this Dynamics project algebra based course! My prof told me there is issue with the displacement being less than the distance. Also, asked to proof with calculations that the object will land on top of the hill and navigate successfully. Please add slides or provide word and i will paste in slides. I need to let him know that it was corrected and the work is correct. Thanks! Added the word report if you need more info