For Dynamics models, you can get the equations of motion for any Resultant Accelerations. The equations of motion are expressed as a system of first order ODE's, the appropriate form for copying directly into your CAS.
If you have n free accelerations, you will get a set of 2n first order differential equations, along with 2n initial conditions.
The equations are functions provided by the system. The prefix for the function names may be set in Edit/ Mechanics Environment/Differential Equation Prefix.
Here is a simple pendulum example.
