Bouncing grenade, help me with the maths!

[NeosDany]

Hi there, I need your help to design the arc of a bouncing missile, it is actually an unit with flying property, locust, and a grenade model, I made the whole trigger already, so it is working but it does not look like the grenade bounces in the ground several times before it reaches the destination. So, I need you to tell me if you know, how is the formula to create this effect?

 

[WaterKnight]

start posZ and speedZ
gravity --> negative accelerationZ
add accelerationZ to speedZ each interval
add speedZ to posZ each interval
if posZ < 0 and speedZ < 0 speedZ := -speedZ

 

[Solu9]

Are you steadfast in creating the spell yourself?
Because otherwise you could use this: http://www.hiveworkshop.com/forums/...renade-126967/?prev=search=bounce&d=list&r=20