Solve the all parts of given question:

Question: A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle. The takeoff ramp was inclined at 53.0 degree, the river was 40.0 m wide, and the far bank was 15.0 m lower than the top of the ramp. The river itself was 100 m below the ramp. You can ignore air resistance.

Part A: What should his speed have been at the top of the ramp for him to have just made it to the edge of the far bank?

Part B: If his speed was only half the value found in A, where did he land?

Please show all work to solve the above question.