PhysX or physics implementation in CPP/BP for custom vehicles

  1. Can I find anywhere documentation or any advice how to implement custom physics for vehicles in UE?

There is very general doc Physics | Unreal Engine Documentation but that doesn’t cover any low level API functions (like adding force in direction, and documentation how does it work).

  1. Can I use other engine then PhysX to calculate collisions and adding forces to movable skeletal meshes?

For example for simply arcade game I don’t need complicated calculations for engines).