Final answer:
The statement suggesting a common maximum speed for landslides is about 500 kilometers per hour is false; while landslides can move rapidly, this value is extremely high for typical landslide movement.
Step-by-step explanation:
The subject of the question is related to the dynamics of landslides, specifically their speeds, which is a topic within the discipline of Physics. The statement "A common maximum speed for landslides is about 500 kilometers per hour" is False. Landslides can indeed move rapidly, but 500 kilometers per hour is an extreme value that would generally be considered exceptionally high for landslide movement. The speed of landslides can vary greatly depending on the type of landslide and the conditions present, but common speeds are usually much less than this value.