Introduction - If you have any usage issues, please Google them yourself
A 2D physics simulation software, imitation of the real environment of a variety of objects connected with the effect of the application of the collision description: juvenile mental development, school physics curriculum guide, a variety of sports research institutions, based on the impulse of a rigid body hinge and collision, and marketing restrictions hinged calculation a chain, pendulum, car and other models, with the spring toy horse with simulated real-world physics simulation models, and established a user-controlled functions can be reached as children s toys room environment