Velocity affect of the mound

I'm not exactly sure, but for one it would be lower.

Throwing off a mound gives you momentum in a sense, the falling forward motion causes more force to be put on the ball then if you were to throw from flats.

The best answer is yes, it will be faster. However there are all sorts of physics issues involved, and on top of that your motion (mechanics) would be different from each location.

I asked that question here about 9 months ago. The lack of a mound is one of many reasons that few pitchers light up the radar at a carnival pitching booth. (lack of warmup is a bigger reason)

But a mound adds speed only if the pitcher has learned to use it to his advantage. A HS freshman may throw slower off one. Therefore, I think pitchers should practice from a mound as often as possible.

My experience is that a mound adds 1-3 mph to fastball speed.

Throwing off the bump is more stressful to various body parts. There is a time and place for "flat ground" work. Velocity is not the only piece to the puzzle.

The mound increases velocity vs. flat ground.