Gravity Effect (Details)

Ever had that math teacher that told you

99 = 81 and that’s just how it was?
(9
9 = 9+9+9+9+9+9+9+9+9)

Well, I feel like the gravity tutorials I’ve looked through seemed to do just that. Either that or I didn’t understand them. At any rate, I was hoping someone could throughly explain to me of the elements required in, if possible, simplicity.

I know I need a few things and a few things I think I need, so here are my variables.

gravity = 9.8
bounce = .7
velocity = 2
bottom = 400

So far, I’ve only an idea of what’s going on, but I don’t know exactly what’s doing what. On one tutorial, I saw that gravity = 1. Why was gravity = 1? I mean I know it’s not equal to 9.8m/s/s but why 1 and what happens if it’s .9, is it the same but just slower?

I know that I need a gravity speed and increase of speed over time, a bounce factor that determines how bouncy my object is, reversion of energy when it hits the ground and… something to make it go back down.