Parked car, because it goes from a stand-still to moving. Without adding more energy to the equation, the dump truck will slow down or stop after hitting the car = decelerates.
driver of parked vehicle
If the other vehicle was parked, there was no other driver to have license, insurance or registration. The driver who hit the parked vehicle is at fault and is liable for all damages to the parked vehicle.
As long as the parked vehicle is parked properly and not illegally parked in any manner, then the vehicle that rear-ended the parked car is at fault. Now if the parked car is sitting illegally (such as double parked or parked in a no parking zone, etc.) then the parked car is at fault or even both the parked car AND the car that hits it are BOTH at fault.
Aeroplanes
The driver that hit the parked vehicle would be at fault.
Such a vehicle is said to be parked.
if the vehicle is parked on private property and if there is a sign saying that vehicles will be towed away you can move them.
From the rear, front, and left side. If approaching a vehicle from the right side while parallel parked it means you've parked illegaly facing on coming traffic.
Have it towed?
If one vehicle is sitting parked and one is in motion, then logic dictates the vehicle that was in motion is at fault and therefore responsible for the damages.
The person who is backing out
no matter where a vehicle is parked, the moving vehicle is at fault every time.