A ditch 2.5 m wide crosses a trail bike path (Fig 3.36). An upward incline of 15o

Question:

A ditch 2.5 m wide crosses a trail bike path (Fig 3.36). An upward incline of 15o has been built on the approach so that the top of the incline is level with the top of the ditch. What is the minimum speed a trail bike must be moving to clear the ditch? (Add 1.4 m to the range for the back of the bike to clear the ditch safely.)