How to Begin Physics in Video Games

I don't think I've ever shipped a game where we didn't have to rebuild physics in some way because actually it's one of those things. There's no such thing as just plug in the realistic physics in your way. It's always kind of you always having to like make stuff up. But then yeah it's basically just maths. It's just force applied to objects and then colliders on those objects. That's most physics from a video game point of view.