is law or low an adverb

"low" is not an adverb. It is an adjective that describes something that is situated close to the ground or not high in height. On the other hand, "law" is a noun that refers to a system of rules and regulations that are enforced by a community or government.

is slowly an adverb

Yes, "slowly" is an adverb. It describes the manner in which an action is performed. For example, in the sentence "She walked slowly," the word "slowly" is an adverb modifying the verb "walked."

is fast an adverb

"Fast" can function as both an adjective and an adverb. When "fast" is used to describe how something is done, it serves as an adverb. For example, in the sentence "He ran fast," the word "fast" is an adverb because it describes how he ran.