Do all Turks speak this fast? No they don't. Do you feel the actual question being asked is too fast in the question section before comments?
Regarding this comment section the spoken speed is normal. Some of the actual questions are crazy & spoken too fast on many topics.
Listen to Turkish music & Turks while they talk. You will be up to speed in time.
"Bu elma kimin?" Translation: Whose apple is this?
Different use kimin when?? And kim, when usethis
When you ask who is the "owner" or "possessor" of something as a question.
Örnek cümleler. --> "Example sentences."
Bu çanta kimin? Whose purse is this?
Bu çocuk kimin?, Annesi nerede? Whose child is this?, where is its mother?
Kim. "Who" (pronoun) Used in questions.
Başkan kim? Who is the president?
Kim tavuk yer? Who eats chicken?
O kim? Who is that?