LÖVE

I was wondering if LOVE automatic does physics for you like if a speeding ball hits you it move you a bit. If it does, is there a way to change that off?

If you don't specify that you want to use LOVE's rigid body physics engine, it won't use it. No worries.

Sensors, differences in mass, and moving things back to the place they're supposed to be would also be viable options. For instance, a soccer goalie hit by a ball could be propelled somewhat backwards and then acquire a force which makes it move back to the x coordinate it's supposed to be at.