Yes, you agreed to the Terms of Service (aka Social Contract). For people in the USA, that includes the 4th amendment, which explicitly allows law enforcement (living or semi-living) to enter with a warrant. Therefore you have granted permission to enter.
If they don't have a warrant, or if they messed up the paperwork somehow, then they burst into flame.
No, it's not possible to soft-land a large falling object, even with extraordinary luck.
Our intuition serves us well in everyday situations. I think you'll agree that, if you have a big rock 100 meters in the air, it's going to hit the ground hard no matter how you drop or throw it. The bigger the rock, the more we can ignore things like air friction.
The same situation applies to objects in space. If it hits the Earth, it's been falling the whole way from space. The minimum impact velocity is equal to the "height" of Earth's gravity well, about 11.2 km/s.