Is there any physics engine SDK for iPhone/iPod touch and iPad?

Question

Is there any physics engine SDK for iPhone/iPod touch and iPad?

Answer 1

I've used the SIO2 engine for developing games on the iPhone, and it uses the open-source physics engine bullet. I'm not sure if all the soft-body features are available, but certainly the rigid body ones are. I don't know if anybody has written an Objective-C wrapper, but you certainly don't need one.