I am building a game for which I want to simulate certain rigid body dynamics.Could someone suggest me some engines which work on Ubuntu.Also as I have dont have much time to implement it,so it would be helpful if it is a easy one to work with. I have some across one namely ODE.Am looking for others which would help me simulate collisions and angular movements.
You haven't specified your environment and/or language bindings.
For 2d scenario Box2d is a very elegant choice and it has a lot of language bindings. Its quite easy to use. You just need to hookup your billboard/model/image(s) with its physics object and see the magic happen.
I don't know much about ODE. But have some experience with Bullet.Bullet is faster then ODE. It also has a lot of advanced features i.e. OpenCl cloth simulation.
There are others but, above mentioned are most famous. What you want is Rigid body collision and angular movement. Only these 2 feature, shouldn't be very hard or time consuming to integrate. Go through their documentations. Most of them has individual doc part where is explains how to integrate.