Final answer:
Fault in a crash where a car cuts off a truck is usually attributed to the driver who performed the unsafe maneuver, but specifics of the case may influence the final determination. The claim of being blinded by the full moon during an accident at night is implausible as the moon's light is rarely intense enough to cause significant visual impairment.
Step-by-step explanation:
When a crash occurs where the passenger car cuts off a truck, determining who is at fault involves understanding traffic laws and the specifics of the case. Generally, if a vehicle makes a sudden maneuver, such as cutting off another vehicle without sufficient space or warning, that vehicle's driver would typically be considered at fault for failing to maintain a safe following distance and ensure the move could be made safely. However, each accident is unique and can involve various factors that might affect the final determination of fault including road conditions, vehicle speeds, and witness statements.
For example, in the case of a car accident under a full moon where the driver claims to be blinded by the moon, it is unlikely that the moon's light would cause significant vision impairment to cause an accident. Instead, factors such as driver distraction or poor judgment are more common causes of crashes during night time. Similarly, physical evidence and scientific calculations, like those involved in collision theory and determining speeds at impact using frictional forces, also play a substantial role in investigating a crash and establishing fault.