The person who could have prevented the collision. In most cases the car that is moving is at fault.
The car passing with an illegal lane change.
You are.
the person who crashed into you, because that person was supposed to have yield to let you pass
you are... by law, its tish enit
Normally the car that hit the other car is going to be at fault. The vehicle behind you was obviously too close and was not following at a safe distance that would allow him to stop if you did. The police should have issued him a ticket.
Yours. It's your responsibility to make sure that the lane you want to enter is clear.
If you are in reverse and hit anything, moving or not, you are at fault.
It is their fault.
This is not a question. Dog hit by car. Not good for dog.
The car behind you
It depends on whether or not the car is stationary at the time of the accident. If your car is stationary and they stumble into it, then they are at fault. However, if your car is moving when they are hit then you're at fault.