It would get sucked into it, and would never get back out
If you jumped into a black hole, you would be stretched into human spaghetti.
nothing
The black hole's mass would increase by an insignificant amount.
You would die
Should Earth ever collide with a black hole, it would get destroyed.
If a star was "too close" to a black hole, that star would be captured by the black hole's gravity and be pulled into it.
You would have a black hole the size of the combined mass of the two black holes.
Yes, a robot could go into a black hole; pretty much any object you could name would be able to go into a black hole, although it would be unable to exit. It would not be a useful exercise to send a probe into a black hole for purposes of obtaining information since, even if it survived the extreme conditions near a black hole in order enter one, effects predicted by physics would prevent it from communicating from within - even light would not be able to escape past the event horizon from inside.
You would die.
One does not simply "pass through" a black hole.
Gone.
Nothing, not even light, can escape a black hole. So Earth would get caught into the black hole's path and we would be sucked up and crushed to oblivion