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Ball Physics?

Started by wyrd Mar 17, 2005 at 2:46 PM 5 replies 1.8k views

Original Post

Mar 17, 2005 at 2:46 PM

Hi. :) I was wondering where I can find information on ball physics? I know how to make a ball travel in a certain direction using cos/sin, but how do I determine speed and direction when a ball hits the ground or bounces off a wall? TIA.

baddogj

Mar 17, 2005 at 4:20 PM

http://www.glenbrook.k12.il.us/gbssci/phys/Class/newtlaws/u2l1b.html can help and also

http://demoroom.physics.ncsu.edu/html/mechanics.html

I think these can help you answer your question

JohnBolton

Mar 18, 2005 at 3:25 PM

If V is the balls velocity just before bouncing and N is the plane's normal, then V' (the velocity just after bouncing) is:

V' = V - 2 * ( N dot V ) * N

Ark86

Mar 18, 2005 at 4:54 PM

Take a look at my example ball physics program:

http://www.andyknotts.com/programs/ballexample.zip

I used a bunch of different resources, but one helpful one is here:

http://www.gamasutra.com/features/20000516/lander_01.htm

If you would like to see the source for my program just PM me your email address and I will send it to you.

Phillipe

Mar 19, 2005 at 8:50 AM

Right mouse button - Add balls
Left mouse button - Bounce 'em up

Ark86

Mar 19, 2005 at 4:28 PM

Quote:

Right mouse button - Add balls
Left mouse button - Bounce 'em up

Exactly. Sorry I should have explained how to use it.

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