How do I calcule the curve for a canonball

I need the formula for calculate the curve for the landing of canonball on a platform

here the example file:

https://drive.google.com/file/d/0B9uHUU ... sp=sharing

here example image:

https://drive.google.com/file/d/0B9uHUU ... sp=sharing

Thanks

http://www.physicsclassroom.com/class/v ... oblem-Solv

http://www.physicstutorials.org/home/me ... on?start=1

https://www.boundless.com/physics/textb ... 226-10952/

Excelent!!