Optimal Jump Speed: Factors and Considerations

Question
How fast dose a person go to clear a jump without using a nother ramp to help them

Answer
I'm not sure what you're asking. What kind of ramp? Speed is always necesary when jumping anything, you just need to sort of figure it out in your head how fast you should go, and try it a couple times and see how you feel, then go faster or slower depending on how you feel. Hope that helps.