Imagine that you are approaching a black hole in a spacecraft. What would you see? What would happen to you? (please a short simple answer if possible)

As you approach the event horizon, your body would be pulled towards the black hole. It's a process called sphagettification.

As for what you see, that is hard to explain without showing a video, at least for me, but you would see this black hole (ha) and whatever is outside starts to flatten and condense (from your POV) then you would fall into the black hole and then it's complete blackness.

Well theoretically you would see a lone black hole, but circling around it you’d notice it’s spherical

The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.