### constantMomentum.scn

Description:
A scene where the linear and angular momenta should be preserved. No constraint or external forces are applied, only initial positions and velocities are not null.
Analysis:
Opening the nodes' pop-up ("Momentum Stats" tab), the momenta evolution over time can be compared for symplectic explicit Euler and implicit Euler solvers. As expected only the symplectic explicit Euler preserves the angular momentum.